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24-05-2021
Mathematics

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Class A has 12 pupils and class B has 25 pupils.
Both classes sit the same maths test.
The mean score for class A is 80.
The mean score for both classes is 74.
What is the mean score (rounded to 2 DP) in the maths test for class B?

Respuesta :

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24-05-2021

Answer:

71.12

Step-by-step explanation:

80*12= 960

37*74=2738

2738-960=1778

1778/25=71.12

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