Question

11.

The mean weight of 60 students in a class is 40 kg. If the mean weight of boys is 50 kg while that of
the girls is 30 kg, then the number of boys and girls are
[ ]
1) 30, 30
2) 35, 25
3) 25,35
4) 20.40​

Answer 1

Step-by-step explanation:

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