in a class, there are 80 students and their average marks in the annual examin

Question

in a class, there are 80 students and their average marks in the annual examination are 40. if the average marks of passed students are 60 and average marks of failed students are 35, then find out th

Options:

A . 43

B . 58

C . 64

D . 71

Answer: Option C
Explanation :

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