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Mathematics, 06.12.2020 04:20, joshuakirby
Class 10R sat a test the mean mark for the test was 70% there are 30 students in class 10 R,20 of whom are boys the mean mark for the boys in the test was 62% work out the mean mark for the girls
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Answers: 3
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Class 10R sat a test the mean mark for the test was 70% there are 30 students in class 10 R,20 of wh...
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