A group of students take a test. The group consists of 12 boys and 8 girls.
The mean mark for the boys is 18
The mean mark for the girls is 16.5
Calculate the mean mark for the whole group.
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Home » Mathematics » A group of students take a test. The group consists of 12 boys and 8 girls. The mean mark for the boys is 18 The mean mark for the girls is 16.5 Calculate the mean mark for the whole group.