Question

In a class of 50 students, 10 have failed and their average of marks is 2.5. The total marks secured by the entire class were 281. Find the average marks of those who have passed

Answer 1

Total marks of 10 failed students = 28 x 10 = 280 

and total marks of 50 students = 2800 

Therefore, Total marks of 40 passed students . 5 = 2800 - 280 = 2520 

Therefore, Average marks of 40 passed students = 252040=63252040=63