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.

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asked Dec 3, 2022 189k views

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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.

Mathematics
high-school

CharlesNRice asked

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explain two ways in which the preservation of natural environments adds quality of life in a country : ,

Andrew Trevers answered Dec 10, 2022

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