Mathematics, 17.10.2020 23:01 smariedegray

In the end of year History exam, the mean mark scored by the 30 students in Form 11A was 55% and the mean mark scored by the 25 students in Form 11B was 44%. What was the
mean mark of all the students?

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In the end of year History exam, the mean mark scored by the 30 students in Form 11A was 55% and th...

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In the end of year History exam, the mean mark scored by the 30 students in Form 11A was 55% and the mean mark scored by the 25 students in Form 11B was 44%. What was the mean mark of all the students?

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In the end of year History exam, the mean mark scored by the 30 students in Form 11A was 55% and the mean mark scored by the 25 students in Form 11B was 44%. What was the
mean mark of all the students?