A jar contains only red and blue marbles in a ratio of 5:6. If there are 30 blue marbles, how many red marbles are there?
Difficulty: Medium
About this MCQ
Medium GMAT item. Correct choice: C. 25.
- A. 55
Why not A: “55” is not 25.
- B. 30
Why not B: “30” is not 25.
- C. 25 ✓
- D. 20
Why not D: “20” is not 25.
Correct answer
C. 25
Explanation
25 (option C) is the accepted answer to “A jar contains only red and blue marbles in a ratio of 5:6. If there are 30 blue marbles, how many red marbles are there”. Option A (55) is a different value from 25. Option B (30) is a different value from 25. Option D (20) is a different value from 25. Keep 25 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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