In a test series, a pupil’s average marks were 63 per paper. If he had obtained 20 marks more in geography and 2 more marks in physics, his average would’ve become 65 per paper. How many papers were there in the exam?

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Solution

The correct option is D 11
\frac{total marks}{no.of papers}=63
If he had obtained 20+2 = 22 marks more, his average would’ve gone up by 2
$\frac{22}{no.of papers} = 2$
Therefore, number of papers = 11

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In a test series, a pupil’s average marks were 63 per paper. If he had obtained 20 marks more in geography and 2 more marks in physics, his average would’ve become 65 per paper. How many papers were there in the exam?

The correct option is D 11\frac{total marks}{no.of papers}=63 If he had obtained 20+2 = 22 marks more, his average would’ve gone up by 2 22no.of papers=2 Therefore, number of papers = 11

The correct option is D 11
\frac{total marks}{no.of papers}=63
If he had obtained 20+2 = 22 marks more, his average would’ve gone up by 2
$\frac{22}{no.of papers} = 2$
Therefore, number of papers = 11