Civil Service Exam Reviewer · Averages · medium
Section A has 39 students with an average of 70; Section B has 26 students with an average of 91. What is the combined average?
- 78.4
- 80.5
- 82.6
- 79.4
Answer
A. 78.4
Solution
(39 × 70 + 26 × 91) ÷ 65 = 5096 ÷ 65 = 78.4.
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