In an examination, a pupil’s average marks were 63 per paper. If he had obtained 20 more marks for his Geography paper and 2 more marks for his History paper, his average per paper would have been 65. How many papers were there in the examination?
A. 8
B. 10
C. 11
D. 12
Ans: C.Sol.
Let the numbers of papers be x.
Then, 63x + 20 + 2 = 65x (or)
2x = 22 (or)
x = 11.
No comments:
Post a Comment