Question

the mean weight of 50 boys in a class is 70 kg and the mean weight of hundred girls in the class is 55 find the combined mean weight of boys and girls taken together

Answer 1

Answer:

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? Now, mean weight of all boys from the class is 70 kg and mean weight of all girls from the class is 55 kg.