Mathematics, 18.01.2021 21:10, sanfordl

Class A has 30 pupils and class B has 25 pupils. Both classes sit the same maths test.
The mean score for class A is 78.
The mean score for class B is 45.
What is the mean score in the maths test across both classes?

Answers: 1

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Class A has 30 pupils and class B has 25 pupils. Both classes sit the same maths test.
The m...