Class A has 33 students with an average score of 66, and Class B has 25 students with an average score of 66. What is the combined average score of both classes?
Difficulty: Hard
About this MCQ
Hard GMAT item. Correct choice: D. 66.
- A. 69
Why not A: “69” is not 66.
- B. 68
Why not B: “68” is not 66.
- C. 63
Why not C: “63” is not 66.
- D. 66 ✓
Correct answer
D. 66
Explanation
66 (option D) is the accepted answer to “Class A has 33 students with an average score of 66, and Class B has 25 students with an average score of 66. What is the combined average score of both classes”. Option A (69) is a different value from 66. Option B (68) is a different value from 66. Option C (63) is a different value from 66. Keep 66 as the GMAT fact for this stem.
Source: Original practice question, MCQsHub
Tags: American Exams, Quant, Statistics, GMAT
Submitted by: MCQsHub Editorial
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