A jar contains only red and blue marbles in a ratio of 2:7. If there are 56 blue marbles, how many red marbles are there?
Difficulty: Medium
About this MCQ
Medium GMAT item. Correct choice: D. 16.
- A. 18
Why not A: “18” is not 16.
- B. 56
Why not B: “56” is not 16.
- C. 72
Why not C: “72” is not 16.
- D. 16 ✓
Correct answer
D. 16
Explanation
16 (option D) is the accepted answer to “A jar contains only red and blue marbles in a ratio of 2:7. If there are 56 blue marbles, how many red marbles are there”. Option A (18) is a different value from 16. Option B (56) is a different value from 16. Option C (72) is a different value from 16. Keep 16 as the GMAT fact for this stem.
Source: Original practice question, MCQsHub
Tags: Math, American Exams, Ratios, GMAT
Submitted by: MCQsHub Editorial
Related MCQs
- A value starts at 700. It increases by 20%, then decreases by 10%. What is the final value?
- If 3x + 13 = 58, what is the value of x?
- If 4 workers can complete a project in 16 days, how many days would it take 4 workers, assuming equal work rat...
- A value starts at 550. It increases by 10%, then decreases by 20%. What is the final value?
- What is the greatest common factor (GCF) of 43 and 52?
- If 9x + 14 = 50, what is the value of x?