Question

The average marks of 39 students of a class is 50. The marks obtained by 40th student are 39 more than the average marks of all the 40 students .find the mean marks of all the 40 students.

Answer 1

Answer:

A)

Total mark of 30 students is 52=30*52=1560

total mak of six students=31*6=186

total mark of 24 students=1560-186=1374

average is

1374/24=57.25 marks

Explanation: