A jar contains only red and blue marbles in a ratio of 7:9. If there are 18 blue marbles, how many red marbles are there?
Difficulty: Medium
About this MCQ
Medium SAT item. Correct choice: B. 14.
- A. 32
Why not A: “32” is not 14.
- B. 14 ✓
- C. 21
Why not C: “21” is not 14.
- D. 18
Why not D: “18” is not 14.
Correct answer
B. 14
Explanation
14 (option B) is the accepted answer to “A jar contains only red and blue marbles in a ratio of 7:9. If there are 18 blue marbles, how many red marbles are there”. Option A (32) is a different value from 14. Option C (21) is a different value from 14. Option D (18) is a different value from 14. Keep 14 as the SAT fact for this stem.
Source: Original practice question, MCQsHub
Tags: SAT, Math, American Exams, Ratios
Submitted by: MCQsHub Editorial
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