Q228
In an examination, a pupil’s average mark was 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.
9
C.
10
D.
11
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
Let the number of paper be xThen, pupil's total score = 63x
∴ = 65
⇒ 2x = 22
⇒ x = 11