Percents
Ratios
Probability
Average: Mean, Median and Mode
Misc.
100
If 4 radios in a box of 80 were found to be defective, what percent of the radios were defective? (A) 4% (B) 5% (C) 10% (D) 15%
B. 5%
100
You are throwing a party, and you need 5 liters of Yoda Soda for every 12 guests. If you have 36 guests, how many liters of Yoda Soda do you need? (A) 10 (B) 15 (C) 20 (D) 25
B. 15
100
Greg has an MP3 player called the Jumble. The Jumble randomly selects a song for the user to listen to. Greg's Jumble has 6 classical songs, 7 rock songs, and 9 rap songs on it. What is P(not a rap song)? (A) 7/9 (B) 6/9 (C) 9/22 (D) 13/22
D. 13/22
100
If the average of 4 numbers is between 5 and 7, then the sum of the 4 numbers could be any one of the following EXCEPT: (A) 20.5 (B) 25.5 (C) 27 (D) 29
D. 29
100
If 2x+6y = a, what is the value of 3x+9y? (A) 5/2 a (B) 9/4 a (C) 3/2 a (D) 5/4 a
C. 3/2 a
200
What percent of m is 5m/4? (A) 80% (B) 100% (C) 120% (D) 125%
D. 125%
200
The force required to stretch a spring beyond its natural length is proportional to how far the spring is being stretched. If a force of 8 pounds stretches a spring 16 meters beyond its natural length, what force, in pounds, is needed to stretch this spring 42 centimeters beyond its natural length? (A) 15 (B) 21 (C) 31 (D) 37
B. 21
200
A bag of mini donuts has 5 chocolate donuts, 6 powdered donuts, 1 cream cheese donuts, and 3 plain donuts. If you reach in to the bag, what is the probability that you will get a donut that is not chocolate or powdered? (A) 11/15 (B) 1/3 (C) 6/15 (D) 4/15
D. 4/15
200
If the average of -8 and y is -8, then y=? (A) -16 (B) -8 (C) 0 (D) 8
B. -8
200
Jessica and Keisha spent a total of $110. If Jessica spent $10 less than twice what Keisha spent, how much did Keisha spend? (A) $60 (B) $50 (C) $40 (D) $30
C. $40
300
In a certain store, the price of a stereo was increased by $42, or 6 percent of the original price. What was the stereo's original price? (A) $252 (B) $600 (C) $658 (D) $700
D. $700
300
The ratio of 1.5 days to 7 days equals which of the following? (A) 1:35 (B) 1:9 (C) 1:7 (D) 3:14
D. 3:14
300
A coin is flipped 5 times. What is the probability of filliping tails every time? (A) 1/2 (B) 1/32 (C) 1/4 (D) 4/1
B. 1/32
300
If the average age of 5 people is 25. If 4 of the people are 20 years old, how many years old is the fifth person? (A) 30 (B) 35 (C) 40 (D) 45
D. 45
300
If 2f+g=10, and f-h=1, what is the value of f+g+h? (A) 5 (B) 7 (C) 6 (D) 8
D. 8
400
A store which formerly sold peppers at 3 pounds for $2.00 changed the price to 2 pounds for $1.50. If x is the percent increase in the price per pound, x=? (A) 25% (B) 20% (C) 16 2/3% (D) 12 1/2%
D. 12 1/2%
400
If the ratio of e to f is 2/3, and the ratio of f to g is 6/11, then the ratio of e to g must be: (A) 1 (B) 4:11 (C) 1:3 (D) 3:11
B. 4:11
400
A bag contains 2 red marbles, 3 green marbles, and 4 blue marbles. If we choose a marble, then another marble without putting the first one back in the bag, what is the probability that the first marble will be green and the second will be red? (A) 1/9 (B) 2/36 (C) 1/12 (D) 5/9
C. 1/12
400
On average, 48 out of 100 families in a certain town own 2 cars. At this rate, how many out of 150 families do NOT own 2 cars? (A) 98 (B) 78 (C) 72 (D) 52
B. 78
400
Yesterday, Andrew completed 1/6 of his homework, today he completed an additional 4 problems. If the total number of problems he has completed during these two days is 1/4 of the entire homework, how many problems are on Andrew's entire homework assignment? (A) 36 (B) 48 (C) 54 (D) 60
B. 48
500
The carrying capacity of an LR2 oil tanker is 60% higher than the capacity of an LR1 oil tanker. If the capacity of an LR1 oil tanker is 80,000 deadweight tons (DWT), what is the capacity of an LR2 oil tanker, in DWT? (A) 50,000 (B) 112,000 (C) 128,000 (D) 133,000
C. 128,000
500
If 20 centimeters of rope can be used to tie together 3 bundles of sticks, how many bundles of sticks can be tied together by 40 meters of rope? (1m = 100cm) (A) 6 (B) 150 (C) 600 (D) 1500
C. 600
500
A number between 1 and 25 is selected at random. What is the probability that the number is prime? (A) 1/2 (B) 1/25 (C) 9/25 (D) 2/5
C. 9/25
500
If a = 3b = 4c, then the average of a, b, and c in terms of a, is: (A) 8a/3 (B) 9a/36 (C) 9a/7 (D) 19a/36
D. 19a/36
500
Rosa has x cookies and Lawrence has 8 more cookies than Rosa. If together Rosa and Lawrence have 12 cookes, what is the value of x?
2
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