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Mathematics

Answered

Class A has 11 pupils and class B has 20 pupils.
Both classes sit the same maths test.
The mean score for class A is 74.
The mean score for class B is 32.
What is the mean score (rounded to 1 DP) in the maths test across both classes?

Answer :

Snoopy72go Snoopy72go

Answer:

11(74)+20(32)=1454

1454÷31=46.9

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