In an examination a pupil s average mark was 63 per…

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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?

  1. A. 8
  2. B. 9
  3. C. 10
  4. D. 11

Answer: Option D

Here is complete explanation of In an examination a pupil s average mark was 63 per….

Solution(By ExamCraze Team)

Let the number of paper be x
Then, pupil's total score = 63x
∴ $$frac{63x + 20 + 2}{x}$$   = 65
⇒ 2x = 22
⇒ x = 11

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