a student's mark was wrongly entered as 83 instead of 63. due to that the aver

Question

a student's mark was wrongly entered as 83 instead of 63. due to that the average marks for the class got increased by 1/2. what is the number of students in the class?

Options:

A . 45

B . 40

C . 35

D . 38

Answer: Option B
Explanation :

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