Q3. 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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Ответ:

kevinh2683

03.11.2020

Mathematics

2nd choice, 3rd choice, and 4th choice

Step-by-step explanation:

Hope this helps :P

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Q3. 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.