SOLUTION: 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
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Question 894666: 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? Found 2 solutions by reviewermath, MathTherapy:Answer by reviewermath(1029) (Show Source):
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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?
A:
Let x = number of pupils
(38x - 48)/(x - 1) = 36
38x - 48 = 36x - 36
38x - 36x = 48 - 36
2x = 12
x = 6
6 pupils
