The mean weight of 150 students in a class is 60 kg. the mean weight of boys is 70 kg and that of girls is 55 kg. What is the number of boys in the class?

The mean weight of 100 students in a class is 46 kg. The mean weight of boys is 50 kg and that of girls is 40 kg. The number of boys exceeds the number of girls by

The mean weight of 60 students in a class is 40 kg. The mean weight of boys is 50 kg while that of girls is 30 kg. Find the number of boys and girls in the class.

The mean weight of 150 students in a certain class is 60 kg. The mean weight of boys is 70 kg and that of girls in the class is 55 kg. Find the number of boys and girls in the class.

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

The mean weight of 150 students in a certain class is 60 kg. The mean weight of the boys from the class is 70 kg, while that of girls is 55 kg. What is the number of girls in the class?

The mean weight of 150 students of a class is 38 kg. If mean weight of the boys and the girls are 40 kg and 35 kg respectively, find the number of boys and girls.

The mean weight of all the students in a certain class is 60 kg. The mean weight of the boys from the class is 70 kg. while that of the girls is 55 kg. What is the ratio of number of boys to that of girls?