A jar contains only red and blue marbles in a ratio of 5:8. If there are 32 blue marbles, how many red marbles are there?
Difficulty: Medium
About this MCQ
Medium GRE item. Correct choice: C. 20.
- A. 52
Why not A: “52” is not 20.
- B. 32
Why not B: “32” is not 20.
- C. 20 ✓
- D. 25
Why not D: “25” is not 20.
Correct answer
C. 20
Explanation
20 (option C) is the accepted answer to “A jar contains only red and blue marbles in a ratio of 5:8. If there are 32 blue marbles, how many red marbles are there”. Option A (52) is a different value from 20. Option B (32) is a different value from 20. Option D (25) is a different value from 20. Keep 20 as the GRE fact for this stem.
Source: Original practice question, MCQsHub
Tags: Math, American Exams, GRE, Ratios
Submitted by: MCQsHub Editorial
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