Print, Practice and Pass GMAT Admission Entrance Exam 2013-14
Free and New GMAT Practice Test Sample Questions 121-130
GMAT Quantitative
A Problem-solving
Solve these problems and indicate the best of the answer choices given. All
Numbers used are real numbers.
Question 121
If a = 3 and b = -2, what is the value of a2 + 3ab – b2?
A. 5
B. -13
C. -4
D. -20
E. 13
Question 122
34 is what percent of 80?
A. 34%
B. 40%
C. 42.5%
D. 44.5%
E. 52%
Question 123
Jack and Kevin play in a basketball game. If the ratio of points scored by
Jack to points scored by Kevin is 4 to 3, which of the following could NOT be the total number of points scored by the two boys?
A. 7
B. 14
C. 16
D. 28
E. 35
Question 124
Factor the following expression: x2 + x – 12
A. (x – 4) (x + 4)
B. (x – 2) (x + 6)
C. (x + 6) (x – 2)
D. (x – 4) (x + 3)
E. (x + 4) (x – 3)
Question 125
The average of six numbers is 4. If the average of two of those numbers is 2, what is the average of the other four numbers?
A. 5
B. 6
C. 7
D. 8
E. 9
Question 12 6
What is the next-highest prime number after 67?
A. 68
B. 69
C. 71
D. 73
E. 76
Question 127
Solve: 0.25 x 0.03 =
A. 75
B. 0.075
C. 0.75
D. 0.0075
E. 7.5
Question 128
Dean’s Department Store reduces the price of a $30 shirt by 20%, but later raises it again by 20% of the sale price. What is the final price of the shirt?
A. $24.40
B. $32
C. $30
D. $28.80
E. $26.60
Question 12 9
How many 3-inch segments can a 4.5-yard line be divided into?
A. 15
B. 45
C. 54
D. 64
E. 84
Question 130
Sheila, Janice, and Karen, working together at the same rate, can complete a job in 3 1/3 days. Working at the same rate, how much of the job could Janice and Karen do in one day?
A. 1/5
B. 1/4
C. 1/3
D. 1/9
E. 1/8
Answer Key-Free and New GMAT Practice Test Sample Questions 121-130
121. B. Simply substitute the given values for a and b perform the required operations.
122. C. This problem is solved by finding x in this equation: 34/80 = x/100.
123. C. Every possible combination of scores is a multiple of 7, since the two terms of the ratio have a sum of seven.
124. E. To solve this problem, work backwards. That is, perform FOIL on each answer choice until you derive the original expression.
125. A. A set of six numbers with an average of 4 must have a collective sum of 24. The two numbers that average 2 will add up to 4, so the remaining numbers must add up to 20. The average of these four numbers can be calculated: 20/4 = 5.
126. C. Prime numbers are those that are only evenly divisible by one and themselves.
127. D. Simple Multiplication.
128. D. Multiply 30 by 0.2 and subtract this from the original price of the shirt to find the sale price: $24. Then multiply 24 by 0.2 and add the product to the sale price to find the final price.
129. C. There are 12 inches in a foot and 3 feet in a yard. Four and a half yards is equal to 162 inches. To determine the number of 3-inche segments, divide 162 by 3.
130. A. If it takes 3 people 3 1/3 days to do the job, then it would take one person 10 days: 10
3*3 ½=10 thus, it would take 2 people 5 days, and one day of work for two people would complete 1/5 of the job.
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