jdgsosbaiwv jdgsosbaiwv

12-10-2022
Mathematics

contestada

Class A has 28 pupils and class B has 21 pupils.
Both classes sit the same maths test.
The mean score for class A is 71.
The mean score for class B is 42.
What is the mean score (rounded to 2 DP) in the maths test
across both classes?

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