Class A has 20 pupils and class B has 22 pupils. Both classes sit the same maths test. The mean score for class A is 40. The mean score for both classes is 47. What is the mean score (rounded to 2 DP)

Class A has 20 pupils and class B has 22 pupils.

Both classes sit the same maths test.
The mean score for class A is 40.
The mean score for both classes is 47.
What is the mean score (rounded to 2 DP) in the maths test for class B?

2 Answers

Class A has 20 pupils and class B has 22 pupils. Both classes sit the same maths test. The mean score for class A is 40. The mean score for both classes is 47. What is the mean …

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