The average score of students in an examination is 65. The average score of 15 students who failed is 25. If these students are excluded, the average score of students would increase by 20 marks. The number of students initially is:

The average score of students in an examination is 65. The average sco

1.	The average score of students in an examination is 65. The average score of 15 students who failed is 25. If these students are excluded, the average score of students would increase by 20 marks. The number of students initially is:
A.	40
B.	45
C.	48
D.	50
Answer» C. 48