Civil Service Exam Reviewer · Averages · hard
The average of 26 test scores was computed as 42. Later it was found that a score of 97 had been recorded as 91. What is the correct average?
- 42.23
- 41.77
- 42
- 48
Answer
A. 42.23
Solution
Wrong sum = 1092. Correct sum = 1092 − 91 + 97 = 1098. Correct average = 42.23.
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