Mathematics, 18.09.2019 10:30 mendezmarco2004

The mean weight of 8 girls is 55kg and the mean weight of a group of boys if 52kg. the mean weight of all the students is 53.2kg. how many boys are there?

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The mean weight of 8 girls is 55kg and the mean weight of a group of boys if 52kg. the mean weight o...

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