The average marks of 40 students were found to be 60. Later it was found that one student's mark of 85 had been entered as 58. What is the correct average?
A. 59.5
B. 60.675
C. 59.325
D. 60.75
A. 59.5
B. 60.675
C. 59.325
D. 60.75
Best answer
Answer: B. 60.675
Answer: (B) 60.675
Shortcut: the total was short by 85 − 58 = 27, so the average rises by 27 ÷ 40 = 0.675.
Correct average = 60 + 0.675 = 60.675.
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