1.

The mean weight of 150 students in a certain class is 60kg. The mean weight of boys in the class is 70kg and that of girls if 55kg, then number of boys and girls respectively are

Answer»

The mean weight of 150 students in a certain class is 60kg. The mean weight of boys in the class is 70kg and that of girls if 55kg, then number of boys and girls respectively are



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