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Mathematics, 20.01.2020 12:31 eden1017

Class 11w sat a test. the mean mark of the class was 80%

there are 40 students in the class, 30 are girls. the mean mark of the girls was 75%, work out the mean mark for the boys?

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Class 11w sat a test. the mean mark of the class was 80%

there are 40 students in the cl...
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