Civil Service Exam Reviewer · Averages · hard
The average of 32 test scores was computed as 40. Later it was found that a score of 40 had been recorded as 16. What is the correct average?
- 39.25
- 40
- 64
- 40.75
Answer
D. 40.75
Solution
Wrong sum = 1280. Correct sum = 1280 − 16 + 40 = 1304. Correct average = 40.75.
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