Class 11w sat a test. the mean mark of the class was 80%
there are 40 students in the cl...
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?
Answers: 1
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