Mathematics
Mathematics, 24.05.2021 22:10, claydale1659

Class A has 12 pupils and class B has 25 pupils. Both classes sit the same maths test.
The mean score for class A is 80.
The mean score for both classes is 74.
What is the mean score (rounded to 2 DP) in the maths test for class B?

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Class A has 12 pupils and class B has 25 pupils. Both classes sit the same maths test.
The me...

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