A jar contains only red and blue marbles in a ratio of 9:5. If there are 20 blue marbles, how many red marbles are there?
Difficulty: Medium
About this MCQ
Medium GRE item. Correct choice: B. 36.
- A. 20
Why not A: “20” is not 36.
- B. 36 ✓
- C. 56
Why not C: “56” is not 36.
- D. 45
Why not D: “45” is not 36.
Correct answer
B. 36
Explanation
36 (option B) is the accepted answer to “A jar contains only red and blue marbles in a ratio of 9:5. If there are 20 blue marbles, how many red marbles are there”. Option A (20) is a different value from 36. Option C (56) is a different value from 36. Option D (45) is a different value from 36. Keep 36 as the GRE fact for this stem.
Source: Original practice question, MCQsHub
Tags: Math, American Exams, GRE, Ratios
Submitted by: MCQsHub Editorial
Related MCQs
- What is the greatest common factor (GCF) of 87 and 32?
- What is the distance between the points (6, 6) and (-2, 21)?
- A triangle has a base of 26 and a height of 14. What is its area?
- A rectangle has a length of 20 and a width of 19. What is its area?
- A data set has a mean of 32 and consists of 5 numbers. If 4 of the numbers are 24, 28, 38, 28, what is the rem...
- If 2x + 14 = 42, what is the value of x?