Civil Service Exam Reviewer · Averages · medium
Section A has 38 students with an average of 92; Section B has 16 students with an average of 72. What is the combined average?
- 82
- 77.93
- 86.07
- 87.07
Answer
C. 86.07
Solution
(38 × 92 + 16 × 72) ÷ 54 = 4648 ÷ 54 = 86.07.
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