The ratio of the number of boys and girls in a class is 9 ∶ 7. The – McqOptions

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1.	The ratio of the number of boys and girls in a class is 9 ∶ 7. The average weight of all the boys and girls is 54.25 kg. If the average weight of the girls is 52 kg, then what is the average weight (in kg) of the boys?
A.	56.5
B.	57.5
C.	57
D.	56
Answer» E.

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