English, 07.04.2021 16:30 lilyclairehutson

The mean weight of 45 boys is 65kg and 37 girls is 45kg and that of 5 teachers is 70kg. What is the average weight of the whole class included the teachers?

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The mean weight of 45 boys is 65kg and 37 girls is 45kg and that of 5 teachers is 70kg. What is the...

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