A jar contains only red and blue marbles in a ratio of 4:7. If there are 35 blue marbles, how many red marbles are there?
Difficulty: Medium
About this MCQ
Medium GMAT item. Correct choice: D. 20.
- A. 24
Why not A: “24” is not 20.
- B. 35
Why not B: “35” is not 20.
- C. 55
Why not C: “55” is not 20.
- D. 20 ✓
Correct answer
D. 20
Explanation
20 (option D) is the accepted answer to “A jar contains only red and blue marbles in a ratio of 4:7. If there are 35 blue marbles, how many red marbles are there”. Option A (24) is a different value from 20. Option B (35) is a different value from 20. Option C (55) is a different value from 20. Keep 20 as the GMAT fact for this stem.
Source: Original practice question, MCQsHub
Tags: Math, American Exams, Ratios, GMAT
Submitted by: MCQsHub Editorial
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