Hi Big Devil,BigDevil wrote:Number of pupils -> ubelnanna wrote:Can someone please solve this question? Thanks a lot in advance.

A group pupil took part in a quiz and scored an average of 38 marks.when one of the pupils 48 marks was excluded the average marks would become 36.how many pupils took part in the quiz?

Total marks -> u x 38 = 38u

Pupil with 48 marks excluded,

Total marks -> 38u - 48

Number of pupils -> u - 1

Average -> 36

(38u - 48) / (u - 1) = 36

38u - 48 = 36u - 36

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Thanks for helping to explain this question..Is it only be solved by using algebra? No other methods?

Its in a Primary 5 SA2 paper.. Thanks in advance