The average weight of the girls is 46kg and the average weight of the boyd is 52kg.if the ratio of the boys is 6:8 then find the average weight of a whole class
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Given:
The average weight of girls = 46kg
The average weight of boys = 52kg
The ratio = 6:8
To find:
The average weight of the whole class
Solution:
Number of boys = 8x
Number of girls = 6x
Average weight of whole class = 52*(8x) + 46*(6x) / 14x
= 416x + 276x / 14x
= 49.4
Hence, the average weight of a whole class is 49.4 kg
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