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Mathematics, 30.08.2019 19:10 sade20

There are 10 boys and 20 girls in mrs brook's class.
mrs brook gave all the class a test.
the mean mark for all the class is 60
the mean mark for the girls is 56.
work out the mean mark for the boys.

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Answers: 1

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You know the right answer?
There are 10 boys and 20 girls in mrs brook's class.
mrs brook gave all the class a test.
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