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Quantitative Aptitude

Averages

In an examina...

Question

In an examination, Shreya's average marks were 63 per paper. If she had obtained 20 more marks for her Maths paper and 2 more marks for his Social paper, her average per paper would have been 65. How many papers were there in the examination?

A

10

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B

12

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C

11

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D

13

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E

None of these

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Solution

The correct option is C
11

Let the numbers of papers be x.
Then, 63x + 20 + 2 = 65x (or) 2x = 22 (or) x = 11.

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