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Mathematics, 15.12.2020 17:50 astultz309459
7) 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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7) In the end of year History exam, the mean mark scored by the 30 students in Form 11A was
55% and...
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