A group of pupils calculated their average score for a Mathematics test. If one of them scored 9 marks more, their average score would be 81. If one of them scored 3 marks less, their average score would

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Yass asked Mar 5, 2022

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1 vote

A group of pupils calculated their average score for a Mathematics

test. If one of them scored 9 marks more, their average score would
be 81. If one of them scored 3 marks less, their average score would
be 78. How many pupils were there in the group?

Mathematics
college

Yass asked Mar 5, 2022

by Yass

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19 votes

Answer: 4

Step-by-step explanation: +9-(-3)=12

81-78=3

so 12/3=4

Ruchie answered Mar 11, 2022

by Ruchie

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