Mathematics, 24.03.2021 20:30 si1baalmasri

The mean mark for the test was 70% there were 30 students in the class, 20 whom were boys
the mean mark for the boys in the test was 62%
work out the mean mark for the girls

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The mean mark for the test was 70% there were 30 students in the class, 20 whom were boys
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The mean mark for the test was 70% there were 30 students in the class, 20 whom were boys the mean mark for the boys in the test was 62% work out the mean mark for the girls

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Another question on Mathematics

The mean mark for the test was 70% there were 30 students in the class, 20 whom were boys
the mean mark for the boys in the test was 62%
work out the mean mark for the girls