In a class, the mean weight of 60 students is 40 kg. The mean weight of boys is 50 kg while that of the girls is 30 kg. The number of boys and girls respectively are ____.

In a class, the mean weight of 60 students is 40 kg. The mean weight o

1.	In a class, the mean weight of 60 students is 40 kg. The mean weight of boys is 50 kg while that of the girls is 30 kg. The number of boys and girls respectively are ____.
A.	30, 30
B.	35, 25
C.	25, 35
D.	20, 40
Answer» B. 35, 25

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In a class, the mean weight of 60 students is 40 kg. The mean weight of boys is 50 kg while that of the girls is 30 kg. The number of boys and girls respectively are ____.

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