Test Prep GMAT Section 2 - GMAT Section 2: Quantitative Exam

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Roy is now 4 years older than Erik and half of that amount older than Iris. If in 2 years, Roy will be twice as old as Erik, then in 2 years what would be Roy"™s age multiplied by Iris"™s age?

  • A. 8
  • B. 28
  • C. 48
  • D. 50
  • E. 52 C


Answer : Explanation

Explanation:
Translate piece by piece into numbers. R (Roy) = Erik E. + 4. The second equation: R = I (Iris) + 2.
The third equation: R +7 = 2(E + 7). We have three equations with three variables.
Roy is 6, Iris is 4 and Erik is 2. In four years Erik would be 6 and Iris 8, the answer is 48. The correct answer is C.

An investment yields an interest payment of $228 each month. If the simple annual interest rate is 9%, what is the amount of the investment?

  • A. $28,300
  • B. $30,400
  • C. $31,300
  • D. $32,500
  • E. $35,100 B


Answer : Explanation

Explanation:
Principal × percent interest × time = interest earned
Principle × (0.09) × 1/12 = $228.
Solve to find the principal (228 × 12)/0.09= $30,400.
The correct answer is B.

X, Y, Z, and W are integers. The expression X-Y-Z is even and the Expression Y-Z-W is odd. If X is even what must be true?

  • A. Y-Z must be odd.
  • B. W must be even.
  • C. W must be odd.
  • D. W must be even.
  • E. Z must be odd C


Answer : Explanation

Explanation:
The first expression is even and the second is odd, the only difference between the expressions is that the first expression has X and the second has W. So, if X is even W must be odd and the correct answer is C.

Q is a prime number bigger than 10. What is the smallest positive number (except 1) that 3Q can be divided by equally?

  • A. 3 Q.
  • B. Q
  • C. 3
  • D. Q+3
  • E. 2Q C


Answer : Explanation

Explanation:
3Q is a prime number so it can be divide equally by 3Q, by 1 and by the components 3 and Q. The smallest number therefore is 3. The correct answer is C.

In a box there are green balls, 3A + 6 red balls and 2 yellow ones.
If there are no other colors, what is the probability of taking out a green or a yellow ball?

  • A. 1/5.
  • B. 1/2.
  • C. 1/3
  • D. 1/4.
  • E. 2/3. D


Answer : Explanation

Explanation:
The number of green and yellow balls in the box is A+2. The total number of balls is 4A +8. The probability of taking out a green or a yellow ball is: A + 2 / 4 A + 8
= 1/4

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Total 717 questions