The mean mark for the test was 70%
there were 30 students in the class, 20 whom were boys
the...
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
Answers: 1
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