A jar contains only red and blue marbles in a ratio of 8:3. If there are 24 blue marbles, how many red marbles are there?
Difficulty: Medium
About this MCQ
Medium GMAT item. Correct choice: D. 64.
- A. 24
Why not A: “24” is not 64.
- B. 72
Why not B: “72” is not 64.
- C. 88
Why not C: “88” is not 64.
- D. 64 ✓
Correct answer
D. 64
Explanation
64 (option D) is the accepted answer to “A jar contains only red and blue marbles in a ratio of 8:3. If there are 24 blue marbles, how many red marbles are there”. Option A (24) is a different value from 64. Option B (72) is a different value from 64. Option C (88) is a different value from 64. Keep 64 as the GMAT fact for this stem.
Source: Original practice question, MCQsHub
Tags: Math, American Exams, Ratios, GMAT
Submitted by: MCQsHub Editorial