In a class there are 11 boys and 19 girls.
The mean weight of all 30 children is 32.85 kg.
Th...
Mathematics, 03.06.2021 14:00 BOYAWESOME0202
In a class there are 11 boys and 19 girls.
The mean weight of all 30 children is 32.85 kg.
The mean weight of the 11 boys is 31.9 kg.
Work out the mean weight of the 19 girls.
Answers: 3
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