The average marks in mathematics scored by the pupils of a school at the public

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Question

The average marks in mathematics scored by the pupils of a school at the public examination were 39. If four of these pupils who actually scored 5, 12, 15 and 19 marks at the examination had not been sent up, the average marks for the school would have been 44. Find the number of pupils sent up for examination from the school?

Options:

A . 20

B . 25

C . 30

D . 32

Answer: Option B

39x = 5 + 12 + 15 + 19 + (x “ 4)44

x = 25

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