The average marks of 60 students was found to be 48. Later on, it was discovered that a score of 68 was misread as 56. Find the correct average corresponding to the correct score.
A.48.2✓ Correct
B.44.2
C.54.2
D.40.8
Explanation
Total marks = 60×48 = 2880. Corrected total = 2880 − 56 + 68 = 2892. Correct average = 2892/60 = 48.2.
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