Math Practice Problems for High School in Algebraic Sense

HSA-119) Answer: $840

A group of people want to rent a house in Aspen, Colorado, to go skiing. For one week, each person will have to chip in $70. If the group can convince three more people to come along, the cost per person will drop by $14. What was the week's rental? Explain your answer in detail.

HSA-118) Answer: Belt-$12; Cufflinks-$8; Shirt-$25; Socks-$5; Suspenders-$13; Tie-$17

Newman's Fine Haberdashery store is having its annual spring sale You can buy suspenders and socks for $18. You can buy socks and a tie for $22. You can buy a tie and cufflinks for $25. You can buy a shirt and a belt for $37. You can buy cufflinks and a shirt for $33. You can buy a belt and socks for $17. How much does each article cost? Explain your answer in detail.

HSA-117) Answer: lockers 1,4,9,16, ...

The new school has exactly 1,000 lockers and exactly 1,000 students. On the first day of school, the students meet outside the building and agree on the following plan: The first student will enter the school and open all the lockers. The second student will then enter the school and close every locker with an even number (2, 4, 6, 8,...). The third student will then reverse" every third locker (3, 6, 9, 12,...). That is, if the locker is closed, the student will open it; if the locker is open, he or she will close it. The fourth student will then reverse every fourth locker, and so on until all 1,000 students in turn have entered the building and reversed the proper lockers. Which lockers finally remain open? Explain your answer in detail.  

HSA-116) Answer: 1:50 pm
A fast clock gains 12 minutes every normal hour, and the fast clock shows the correct time at I PM. What is the correct time when the fast clock first registers 2 PM?  Explain your answer in detail.

HSA-115) Answer: 400
A bicyclist wants to make a 600-mile trip on his two-wheel bicycle. He has a spare wheel which is used to replace either of the other two wheels. Suppose each of the three wheels is to have the same mileage for the trip. How many miles should each wheel travel? Explain your answer in detail.

HSA-114) Answer: 1089
In the multiplication example below ABCD and DCBA represent 4-digit numerals, and different letters represent different digits. What 4-digit number does ABCD represent? Explain your answer in detail.

 A B C D
         x 9
 D C B A

HSA-113) Answer: 22
When a natural number is multiplied by itself, the result is a square-number. Since 1x1 = 1, 2x2 = 4, 3 x3 = 9, 4x4 = 16,   1, 4, 9, 16, ... are square-numbers. How many natural numbers less than 500 are square-numbers?  Explain your answer in detail.

HSA-112) Answer: 5 minutes
A light flashes every 1 minute 15 seconds. Another flashes every 1 minute 40 seconds. Suppose they flash together at a certain time. What is the shortest amount of time that will elapse before both lights will again flash together?  Explain your answer in detail.

HSA-111) Answer: 4 days
A crew of 8 people can build a concrete wall in 6 days. Suppose 4 more people had joined the crew at the start. Assume that each person works at the same rate as each of the other people. How many days would it have taken the new crew to build the same wall? Explain your answer in detail.

HSA-110) Answer: 8
The cost of mailing a letter first-class is 29 cents for the first ounce and 23 cents for each additional ounce. A letter weighs exactly N ounces where N is a natural number, and the total mailing cost is $1.90. What is the value of N?  Explain your answer in detail.

HSA-109) Answer: 30
If I add 5 to 1/3 of a number, the result is 1/2 of the number. What is the number?  Explain your answer in detail.

HSA-108) Answer: 21
Consecutive add numbers are odd numbers that follow in order such as 5, 7, 9, and I 1. The sum of five consecutive odd numbers is 85. What is the largest number of the five?  Explain your answer in detail.

HSA-107) Answer: 720
The first fifteen multiples of 6 are 6,12, 18, 24,..., 84, 90. What is the sum of these multiples of 6?  Explain your answer in detail.

HSA-106) Answer: 6
Two students are needed to work in the school store during the lunch hour every day, and four students volunteer for this work. What is the greatest number of days that can be arranged in which no pair of the four students works together more than once? Explain your answer in detail.

HSA-105) Answer: 8 oz.
The weight of a glass bowl and the marbles it contains is 50 ounces. If the number of marbles in the bowl is doubled, the total weight of the bowl and marbles is 92 ounces. What is the weight of the bowl? (Assume that each of the marbles has the same weight.) Explain your answer in detail.

HSA-104) Answer: 5 marbles
Said Anne to Betty: "If you give me one marble, we will each have the same number of marbles." Said Betty to Anne: "If you give me one marble, I will have twice as many marbles as you will then have." How many marbles did Anne have before any exchange was made?  Explain your answer in detail.

HSA-103) Answer: $48
Betty wants to purchase a bicycle but is $23 short. Claire wants to purchase the same bicycle but is $25 short. If they combine their money, they will have just enough to buy the bicycle. What is the cost of the bicycle?  Explain your answer in detail.

HSA-102) Answer: 650
The number 2 is the first even number, 4 is the second even number 6 is the third even number, and so forth. What is the sum of the first twenty-five even numbers?  Explain your answer in detail.

HSA-101) Answer: 67
The three-digit number AB8 is 296 more than the two-digit number AB. What is the value of the two-digit number AB?  Explain your answer in detail.

HSA-100) Answer: 9
In the addition example below, different letters represent different digits. What digit does A represent?  Explain your answer in detail.

   AA
 +AA
 CAB

HSA-99) Answer: 43"
The sum of the heights of Paul and Rachel is 94 inches. Rachel is 8 inches tailor than Paul. How many inches tall is Paul?  Explain your answer in detail.

HSA-98) Answer: 72
What number multiplied by itself is equal to the product of 32 and 162? Explain your answer in detail.

HSA-97) Answer: 67
N is the number of buttons in a sawing box. a) N is more than 40 but less than 80. b) When N is divided by 5, the remainder is 2. c) When N is divided by 7, the remainder is 4. Find the value of N.  Explain your answer in detail.

HSA-96) Answer: 325
The sum of the first 25 multiples of 4 is: 4 + 8 + 12 + ... + 100. The sum of the first 25 multiples of 3 is: 3 + 6 + 9 + ... + 75. What number is equal to the difference of the two sums?  Explain your answer in detail.

HSA-95) Answer: 151
If you start with 4 and count by 3s, you get the sequence 4,7,10,...,N where 4 is the first number, 7 is the second number, 10 is the third number, and so forth. If N is the fiftieth number, what number does N represent?  Explain your answer in detail.

HSA-94) Answer: 1
7¹= 7, 7²= 7x7 = 49, 7³ = 7x7x7 = 343, and so forth. When multiplied out, 7²  has a units digit of 9, 7³ has a units digit of 3, and so forth. What is the units digit of 7²⁰?  Explain your answer in detail.

HSA-93) Answer: 8
In the five-digit number A6A41, each of the As represents the same digit and A6A41 is divisible by 9. What digit does A represent?  Explain your answer in detail.

HSA-92) Answer: $70
Mr. Chin went to a store where he spent one-half of his money and then $14 more. He then went to another store where he spent one-third of his remaining money and then $14 more. He then had no money left. How much did he have when he entered the first store?  Explain your answer in detail.

HSA-91) Answer: 18
If 48 is added to one-third of a number, the triple of the number is the result. What is the number?  Explain your answer in detail.

HSA-90) Answer: 75
In the multiplication example below, different letters represent different digits. What two-digit number does AB represent?  Explain your answer in detail.

    AB
  xAB
  CAB
BDB
BEDB

HSA-89) Answer: Wednesday
Suppose five days after the day before yesterday is Friday. What day of the week will tomorrow then be?  Explain your answer in detail.

HSA-88) Answer: 12
A fisherman sold some big fish at $4 each and twice as many small fish at $1 each. He received a total of $72 for the big and small fish. How many big fish did he sell?  Explain your answer in detail.

HSA-87) Answer: 100
Two dogs run around a circular track 300 feet long. One dog runs at a steady rate of 15 feet per second, the other at a steady rate of 12 feet per second. Suppose they start at the same point and time. What is the least number of seconds that will elapse before they are again together at the starting point?  Explain your answer in detail.

HSA-86) Answer: 3
A certain examination of 12 questions was graded by giving 10 points for each correct answer and by then deducting 5 points for each incorrect answer. David attempted all 12 questions, leaving no question unanswered and scored a total of 75 points. How many wrong answers did he have?  Explain your answer in detail.

HSA-85) Answer: 6
A person exchanged 390 pennies for quarters, dimes and nickels. The number of dimes in the exchange was twice the number of quarters and the number of nickels was twice the number of dimes. How many quarters were in the exchange?  Explain your answer in detail.

HSA-84) Answer: 160
When I open my Math book, two pages face me and the sum of the two page numbers is 317. What is the number of the very next page?  Explain your answer in detail.

HSA-83) Answer: 304
The following number sequence is formed by starting with 7 and then, adding 3 to each term to get the next term: 7, 10, 13, 16, 19, ... . The lst term of the sequence is 7, the 2nd term is 10, and so forth. What is the 100th term?  Explain your answer in detail.

HSA-82) Answer: 50 cents
The cost of sunglasses and a case for them is $ 10. If the sunglasses cost $9 more than the case, what is the cost of the case?  Explain your answer in detail.

HSA-81) Answer: 30 leaps
A kangaroo chases a rabbit which starts 150 feet ahead of the kangaroo. For every 12-foot leap of the kangaroo, the rabbit makes a 7-foot leap. How many leaps will the kangaroo have to make to catch up to the rabbit?  Explain your answer in detail.

HSA-80) Answer: 8
In the following sequence, there are 10 numbers. Each number has one more 2 than the preceding number: 2,22,222,2222 .... 2222222222 . What is the hundreds digit of the sum of these 10 numbers?  Explain your answer in detail.

HSA-79) Answer: $10
Five brothers, each born in a different year, share a gift of $100 according to the following arrangement: each boy, except the youngest, gets $5 more than his next younger brother. How much does the youngest boy get?  Explain your answer in detail.

HSA-78) Answer: 5
The sum of the ages of Alice, Betty, and Clara is 29 years. Betty is 4 years older than Alice and Clara is 6 years older than Betty. What is Alice's age?  Explain your answer in detail.

HSA-77) Answer: 9
Henry was able to buy some 23-cent stamps and some 15-cent stamps for a total of exactly $2.50. How many 15-cent stamps did he buy?  Explain your answer in detail.

HSA-76) Answer: 32²
If a natural number is multiplied by itself, the result is called a perfect square. Thus, 1, 4, 9, 16, 25, 36, 49, ... are perfect squares and also consecutive because they follow in order. The number 1000 is between two consecutive perfect squares. Which one of these two squares is closer to 1000?  Explain your answer in detail.

HSA-75) Answer: $18
I spent 2/3 of my money in store A. I then spent 1/3 of what remained in store B. When I left store B, I had $4. How much money did I have when I entered store A?  Explain your answer in detail.

HSA-74) Answer: A-=3, Bm2
If 6 is placed at the right end of a two-digit number AB, the value of the three-digit number thus formed is 294 more than AB. What is the original two-digit number AB?  Explain your answer in detail.

HSA-73) Answer: 27
An Olympiad team is made up of students from the 4th, 5th, and 6th grades only. Seven students are 5th graders, eleven students are 6th graders, and one-third of the entire team are 4th graders. How many students are on the team?  Explain your answer in detail.

HSA-72) Answer: 8:01
A light flashes every 4 seconds, a second light flashes every 5 seconds, and a third light flashes every 6 seconds. If all three lights flash together at 8 o'clock, what is the very next, time on the clock that they will again flash together?  Explain your answer in detail.

HSA-71) Answer: D
Suppose all the counting numbers are written in columns in the pattern shown below. Name the letter of the column in which the number 1000 will appear.  Explain your answer in detail.

HSA-70) Answer: 46
Let all the odd numbers from 1 through 301 inclusive be written. How many times will the digit 3 appear?  Explain your answer in detail.

HSA-69) Answer: A=2, B=l
In the equation below, A and B represent natural numbers. What values of A and B will make the equation true?  Explain your answer in detail.
A/3 + B/4 = 11/12

HSA-68) Answer: 16
There are twice as many liters of water in one container as in another. If 8 liters of water are removed from each of the two containers, there will be three times as many liters of water in one container as in the other. How many liters of water did the smaller container have to begin with?  Explain your answer in detail.

HSA-67) Answer: 2
In the following sequence of numbers, each number has one more I than the preceding number: I 11, 111, 1111, 11111, .... What is the tens digit of the sum of the first 30 numbers of the sequence?  Explain your answer in detail.

HSA-66) Answer: 35
Consecutive odd numbers are odd numbers that differ by 2 and follow in order such as 1, 3, 5, 7, 9, or, 17,19, 21. Find the first of seven consecutive odd numbers if the average of the seven numbers is 41.  Explain your answer in detail.

HSA-65) Answer: 12
When 24 is added to a number, the result is the same as when the number is multiplied by 3. What is the number?  Explain your answer in detail.

HSA-64) Answer: D
Suppose all counting numbers are arranged in columns as shown below. Under what letter will the number 300 appear?    Explain your answer in detail.

HSA-63) Answer: 6
Each of the three diagrams below shows a balance of weights using different objects. How many ðs will balance a O? Explain your answer in detail.
O = Ñ+ð+ð          O+ð = Ñ+Y          Ñ = ð+Y

HSA-62) Answer: $2.70
Mrs. Bailey has equal numbers of nickels and quarters but the value of the quarters is $1.80 more than the value of the nickels. What is the total value of all coins together in dollars and cents?  Explain your answer in detail.

HSA-61) Answer: 4
In the addition problem below, AB and BA each represent a two-digit number, and A and B stand for different digits. Find the value of A.  Explain your answer in detail.

   B A
   A B
+ A B
C A A

HSA-60) Answer: 20
A package weighs P pounds, P being a whole number. To ship this package by express costs $1.65 for the first five pounds and 12 cents for each additional pound. The total shipping cost was $3.45. How many pounds did the package weigh?  Explain your answer in detail.

HSA-59) Answer: $38
Patricia has $12 more than Rhoda and $15 more than Sarah. Together all three have $87. How much does Patricia have?  Explain your answer in detail.

HSA-58) Answer: 32
If I start with the number 7 and count by 4s, the following sequence is obtained: 7, 11, 15, 19, 23, and so forth. A now sequence is formed when I start with a different number and count by a different number. Suppose the 2nd number of the new sequence is 8 and the 5th number is 17. What is the 10th number of the new sequence?  Explain your answer in detail.

HSA-57) Answer: 13
The quotient of two numbers is 4 and their difference is 39. What is the smaller number of the two?  Explain your answer in detail.

HSA-56) Answer: 99
What is the total of one plus two plus three plus four plus five plus six plus, one plus two plus three plus four plus five plus six plus, one plus two plus three plus four plus five plus six plus, one plus two plus three plus four plus five plus six plus, one plus two plus three plus four plus five?  Explain your answer in detail.

HSA-55) Answer: 31
Alice started a Math Club during the first week of school. As the only member, she decided to recruit two new members during the following week of school. Each new member, during the week following the week when he or she became a member, recruits two new members. How many members will the club have at the end of five weeks?  Explain your answer in detail.

HSA-54) Answer: 1:10
One light flashes every 2 minutes and another light flashes every 3 ½ minutes. Suppose both lights flash together at noon. What is the first time after I PM that both lights will flash together?  Explain your answer in detail.

HSA-53) Answer: 950
The sum of the first twenty-five natural numbers is 325: 1+2+3+4+ --- +25=325. What is the sum of the next twenty-five natural numbers: 26+27+28+29+ --- +50=?  Explain your answer in detail.

HSA-52) Answer: 23
A restaurant has a total of 30 tables which are of two types. The first type seats two people at each table; the second type seats five people at each table. A total of 81 people are seated when all seats are occupied. How many tables for two are there?  Explain your answer in detail.

HSA-51) Answer: 40
There are 4 separate large boxes, and inside each large box there are 3 separate small boxes, and inside each of these small boxes there are 2 separate smaller boxes. How many boxes, counting all sizes, are there altogether?  Explain your answer in detail.

HSA-50) Answer: 12 meters
Alice and Betty run a 50-moter race and Alice wins by 10 meters. They then run a 60-meter race, and each girl runs at the same speed she ran in the first race. By how many meters will Alice win?  Explain your answer in detail.

HSA-49) Answer: 4
When the same whole number is added to both the numerator and denominator of 2/5, the value of the new fraction is 2/3. What number was added to both the numerator and denominator?  Explain your answer in detail.

HSA-48) Answer: 7
The sum of the ages of three children is 32. The age of the oldest is twice the age of the youngest. The ages of the two older children differ by three years. What is the age of the youngest child?  Explain your answer in detail.

HSA-47) Answer: 848
Below, the sum of two 3-digit numbers is represented. A, B, and C represent the digits 2, 3 and 5 but not necessarily in the same order, and different letters represent different digits. What is the largest value the indicated sum could have?  Explain your answer in detail.
    B A C
 + C A B

HSA-46) Answer: 9
(5273)² means 5273 x 5273; (5273)³ means 5273 x 5273 x 5273; and so forth. Suppose (5273)⁶ is completely multiplied out. What will the units (or ones) digit be in the resulting product?  Explain your answer in detail.

HSA-45) Answer: 9:21
A slow clock loses 3 minutes every hour. Suppose the slow clock and a correct clock both show the correct time at 9 A.M. What time will the slow clock show when the correct clock shows 10 o'clock the evening of the same day?  Explain your answer in detail.

HSA-44) Answer: 41
The digit 3 is written at the right of a certain two-digit number thus forming a three-digit number. The new number is 372 more than the original two-digit number. What was the original two-digit number?  Explain your answer in detail.

HSA-43) Answer: 9
Tickets for a concert cost $2 each for children and $5 each for adults. A group of thirty people consisting of children and adults paid a total of $87 for the concert. How many adults were in the group?  Explain your answer in detail.

HSA-42) Answer: 26
In hoopball, a field goal is worth 2 points and a foul shot is worth I point. Suppose a team scored 72 points and made 6 more field goals than foul shots. How many foul shots did the team make? Explain your answer in detail.

HSA-41) Answer: 22,100
1² means I x 1, 2² means 2 x 2, 3²means 3 x 3, and so forth.      1²+ 2²+ 3²+ 4² + ... + 25²= 5525, and 2²+ 4²+ 6² + 8² + ... + 50² = N. Find the value of N.  Explain your answer in detail.

HSA-40) Answer: $27
Tom went to a store and spent one-third of his money.  He went to a second store where he spent one-third of what remained, and then had $12 when he left.  How much money did he have to gegin with at the first store?  Explain your answer in detail.

HSA-39) Answer: 32
The product of two numbers is 128 and their quotient is 8.  What are the numbers?  Explain your answer in detail.

HSA-38) Answer: 127
The sum of all digits in the numbers 34, 35, and 36 is 24 because (3+4) + (3+5) + (3+6)=24.  Find the sum of all digits in the first twenty-five natural numbers:  1,2,3,4,5,...,23,24,25.  Explain your answer in detail.

HSA-37) Answer: $9
Alice earned a total of $65 for working five days after school.  Each day after the first day, she earned $2 more than she earned the day before.  How much did she earn on the first day?  Explain your answer in detail.

HSA-36) Answer: 76
If you start with 3 and count by 7s, you get the terms of the sequence 3, 10, 17, ..., 528 where 3 is the lst term, 10 is the 2nd term, 17 is the 3rd term, and so forth up to 528 which is the Nth term.  What is the value of N?  Explain your answer in detail.

HSA-35) Answer: 24
One day, Carol bought apples at 3 for 25 cents and sold all of them at 2 for 25 cents.  If she made a profit of $1 that day, how many apples did she sell?  Explain your answer in detail.

HSA-34) Answer: A=3,  B=2
A and B are whole numbers, and A/11 + B/3 = 31/33.  Find the value of A and the value of B.  Explain your answer in detail.

HSA-33) Answer: 12
If 20 is added to one-third of a number, the result is the double of the number.  What is the number?  Explain your answer in detail.

HSA-32) Answer: $36
A woman spent two-thirds of her money.  She lost two-thirds of the remainder and then had $4 left.  With how much money did she start?  Explain your answer in detail.

HSA-31) Answer: F
Suppose all the counting numbers are arranged in columns as shown below.  Under what column-letter will 1000 appear?  Explain your answer in detail.

HSA-30) Answer: 78
A chime clock strikes 1 chime at one o'clock, 2 chimes at two o'clock, 3 chimes at three o'clock, and so forth.  What is the total number of chimes the clock will strike in a twelve-hour period?  Explain your answer in detail.

HSA-29) Answer: 12 grams
The average of five weights is 13 grams.  This set of five weights is then increased by another weight of 7 grams.  What is the average of the six weights?  Explain your answer in detail.

HSA-28) Answer: 29
If we count by 3s starting with 1, the following sequence is obtained:  1, 4, 7, 10, ... .  What is the 100th number in the sequence?  Explain your answer in detail.

HSA-27) Answer: 325
Find the sum of the counting numbers from 1 to 25 inclusive.  In other words, if S=1+2+3+...+24+25, find the value of S.  Explain your answer in detail.

HSA-26) Answer: 12 cents
In a stationery store, pencils have one price and pens have another price.  Two pencils and three pens cost 78 cents.  But three pencils and two pens cost 72 cents.  How much does one pencil cost?  Explain your answer in detail.

HSA-25) Answer: 42 and 43
When I open my mathematics book, there are two pages which face me and the product of the two page numbers is 1806.  What are the two page numbers?  Explain your answer in detail.

HSA-24) Answer: $5
A camera and case together cost $1.00.  If the camera costs $90 more than the case, how much does the case cost?  Explain your answer in detail.

HSA-23) Answer: 90 cents
One loaf of bread and six rolls cost $1.80.  At the same prices, two loaves of bread and four rolls cost $2.40.  How much does one loaf of bread cost?  Explain your answer in detail.

HSA-22) Answer: 54
The age of a man is the same as his wife's age with the digits reversed.  The sum of their ages is 99 and the man is 9 years older than his wife.  How old is the man?  Explain your answer in detail.

HSA-21) Answer: D is 50 more than N
D is the sum of the odd numbers from 1 thought 99 inclusive, and N is the sum of the even numbers from 2 through 9 inclusive.  Which is greater, D or N, and by how much?  Explain your answer in detail.

HSA-20) Answer: D
The counting numbers are arranged in four columns as shown below.  Under which column letter will 101 appear?  Explain your answer in detail.

HSA-19) Answer: Anne $2
When Anne, Betty, and Cynthia compared the amount of money each had, they discovered that Anne and Betty together had $12, Betty and Cynthia together had $1, and Anne and Cynthia together had $10.  Who had the least amount of money, and how much was it?  Explain your answer in detail.

HSA-18) Answer: 7
Thirteen plums weigh as much as two apples and one pear.  Four plums and one apple have the same weight as one pear.  How many plums have the weight of one pear?  Explain your answer in detail.

HSA-17) Answer: 26
The product of two numbers is 144 and their difference is 10.  What is the sum of the two numbers?  Explain your answer in detail.

HSA-16) Answer: 55
My age this year is a multiple of 7.  next year it will be a multiple of 5.  I am more than 20 years of age but less than 0.  How old will I be six years from now?  Explain your answer in detail.

HSA-15) Answer: 1.5 pounds
A jar filled with water weighs 10 pounds.  When one-half of the water is poured out, the jar and remaining water weigh 5 3/4 pounds.  How much does the jar weigh?  Explain your answer in detail.

HSA-14) Answer: 324
Gina and some friends are gathering information for a paper on astrological signs. For the 477 classmates born under Virgo, Gemini, Leo, Pisces, and Aquarius, they discovered that there were six times as many Virgos as Geminis; 3/8 as many Leos as Virgos; 1/2 as many Pisces as the combined total of Leos and Virgos; and 5 more than 1/3 the number of Pisces were Aquarius. How many of the 477 classmates were born under Virgo and Pisces?  Explain your answer in detail.

HSA-13) Answer: 30th
Ticket lines are huge around the Colossal Arena. The Boulders, one of the most popular rock groups ever, are giving a concert on Saturday. When the tickets went on sale Monday, 500 were sold in the first hour, 560 tickets were sold in the second hour, and 640 tickets were sold in the third hour. After the second hour, the increase in ticket sales every hour was 20 more than the increase of the previous hour. If sales continue at that rate, in what hour will 10,000 tickets be sold for the Boulders concert?  Explain your answer in detail.

HSA-12) Answer: 11, 15, 33, 55
Let N be a number that divides 171 with a remainder of 6.  List all the two-digit numbers that N can be.  Explain your answer in detail.

HSA-11) Answer: 16 Combos,  17 Hot dogs,  22 Hamburgers,  25 Sodas
Lance and Mario were working in the snack bar at the Turbulent Tunas Concert. They sold hot dogs for $1.65, hamburgers for $2.35, sodas for $.85, and the combo plate with fries, salad, a hamburger; and soda for $3.89. They sold 80 items in an hour for $163.24. How many of each kind of food did they sell, and how much did they make on each kind of food?  Explain your answer in detail.

HSA-10) Answer: 9 days
Neville Newt said, "Generally I like rain, but this is ridiculous. If this continues, we'll have to get the beavers to build an ark!" During the first storm, they got .5 inches of rain. Each day after that, they got 50% more rain than on the previous day. At that rate, how long would it be before they had 25 inches of rain?  Explain your answer in detail.

HSA-9) Answer: Diamond City - 20;  Heart City - 21;  Club City - 16
Allison Wonderland and her family were vacationing in a very peculiar city. Everyone in the city spoke in equations. Mr. Wonderland pulled into a gas station and asked the attendant how many miles they were from Diamond City, Heart City, and Club City. The attendant, a strange-looking man in a tall hat, pointed north and said, "2/5 of the number of miles to Diamond City, plus 32, is equal to 2 times the number of miles to Diamond City." Then he pointed south and said, "1/3 the number of miles to Heart City, plus 35, is equal to 2 times the number of miles to Heart City." Then he poured himself some tea, and pointed to the east and said, "1/2 the number of miles to Club City, plus 40, is equal to 3 times the number of miles to Club City." As they left the gas station, Mrs. Wonderland pulled out her calculator, but Allison said they didn't need it. How far were they from each city?   Explain your answer in detail.

HSA-8) Answer: 18
The sum of the ages of Al and Bill is 25; the sum of the ages of Al and Carl is 20; the sum of the ages of Bill and Carl is 31.  Who is the oldest of the three and how old is he?  Explain your answer in detail.

HSA-7) Answer: 20%
Mrs. Ross has 55 percent of the senior class students in her Advanced Physics class. Mr. Luellan has 35 percent of the senior class in his Calculus class. 10 percent of the senior class is taking both classes. What percent of the senior class is taking neither of these classes?  Explain your answer in detail.

HSA-6) Answer: 14th
Dr. A. B. Loney is a marine biologist charting the number of sharks, whales, jellyfish, and stingrays found in the Pacific Ocean. On the first day he found 7 sharks, 3 whales, 2 jellyfish, and 4 stingrays. The second day he counted 6 sharks, 5 whales, 8 jellyfish, and 8 stingrays. On the third day he counted 8 sharks, 4 whales, 5 jellyfish, and 7 stingrays. The fourth day he counted 7 sharks, 6 whales, 11 jellyfish, and 11 stingrays; and on the fifth day 9 sharks, 5 whales, 8 jellyfish, and 10 stingrays. If he continues to spot the animals at the same rates, on what day will he spot 75 animals?  Explain your answer in detail.

HSA-5) Answer: 329
A recent survey at the Tummy Yummies Dog Food Company revealed that for every package of Beef Stew sold, doggie diners devoured 7 packages of Mellow Meatloaf, 6 packages of Chopped Chicken Chow Mein, and 9 packages of Barbequed Beef. They discovered that for every 2 packages of Beef Stew sold, one package of Mush Mix was purchased. If Tummy Yummies Dog Food Company sold 84 packages of chicken dinners one day, how many dinners did they sell altogether?   Explain your answer in detail.

HSA-4) Answer: Milo 27, mother 54, grand father 72
Milo's age is the same as his grandfather's with the digits reversed. The product of their ages gives a year during World War II. If Milo's mother is twice as old as Milo, then how old is Milo, his mother, and his grandfather?  Explain your answer in detail.  

HSA-3) Answer: 168 oz cactus root = 10-8 oz dried spiders
Anastasia of the Magic Forest is a bit absent-minded. Once a week she makes a batch of magic potion. But every week she seems to be out of something that she needs for her recipe, so she has to refer to her chart of equivalencies and try to substitute as best she can. Her chart lists these equivalencies: 7 ounces of powdered snail shell may be substituted for 12 ounces of dried spider; 3 ounces of bats' wings may be substituted for 5 ounces of frog toes; and 24 ounces of cactus root may be substituted for 9 ounces of powdered snail shell. Today she is fresh out of powdered snail shell and dried spider. What can she substitute for dried spider and in what amount?  Explain your answer in detail.

HSA-2) Answer: 39 sea animals
Claude kept track of what he saw at Sea Universe Theme Park. He saw twice as many sharks as dolphins. The number of whales was 6 less than the number of sharks. There were 5 times as many sea lions as there were whales. He saw 20 sea lions. How many did he see altogether?  Explain your answer in detail.

HSA-1) Answer:  hammer $4;  pliers $2
The first interstellar tourist shuttle is ready for departure to the planets Zerbo, Yorx, Greebe, and Blinko. Tourists from all over Earth are waiting to board. They are eager to shop in the stores on the different planets. As they shop they will have to remember that 9 Zerbo dollars have the same value as 3 Yorx dIn Zolt's Hardware Store, you can buy homeowners' tools in savings packs. In the Basic-Pak, you get a hammer, a pair of pliers, and a screwdriver for $7.50. In the Starter-Pak, you get two hammers, two pairs of pliers, and four screwdrivers for $18.00. In the Family-Pak, you get five hammers and four pairs of pliers for $28.00. How much do each of the tools cost?  Explain your answer in detail.

Share a problem (thank you) to add to this list and submit to:   donna_buck@pasd.wednet.edu Please title the subject "Problems for HSA"and include the answer.