GRE Question of the Day (March 15th)

Math

If a ≥ 30 and b ≤ 15, then which of the following must also be true?
A. a − b ≤ 45
B. a − b ≤ 15
C. a − b ≥ 15
D. a + b ≤ 45
E. a + b ≥ 45

Correct Answer - C  - (click and drag your mouse to see the answer)

Question Discussion & Explanation