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Class A has 22 pupils and class B has 9 pupils. Both classes sit the same maths test. The mean score for class A is 31. The mean score for both classes is 42. What is the mean s…

Class A has 22 pupils and class B has 9 pupils. Both classes sit the same maths test. The mean score for class A is 31. The mean score for both classes is 42. What is the mean s…
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Class A has 22 pupils and class B has 9 pupils.

Both classes sit the same maths test.
The mean score for class A is 31.
The mean score for both classes is 42.
What is the mean score (rounded to 2 DP) in the maths test for class B?

User Dynamo
by
8.1k points

1 Answer

3 votes

Answer:

that is 9/31=0.2903=0.29

User Mquemazz
by
7.6k points
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