The average weight of 55 students is 55 kg , and the average weight of another 45 students is 45 kg .
Find the average weight of all the students .

There are 50 students in a class in which boys are 8 more than the girls. Average weight of all the students is 50.5 kg and the average weight of all the girls is 48.5 kg then find the average weight of all the boys.

If the average weight of the students of a class is 15kg, the average weight of the students of another class is 30kg and average weight of the students of both the classes is 25kg, then find the ratio of the number of students of the first class to the another class.

If the average weight of the class of students is 15 and the average weight of another class of students is 30, then the find the ratio of the students of the first class to the another class of 30 students when the average weight of both the classes is 25:

If the average weight of a class of students is 15 and the average weight of another class of students is 30, then find the ratio of the students of the first class to the another class of 30 students when the average weight of both the classes is 25 :

The average weight of a class of 40 students is 30 and the average weight of a class of 20 students is 15. Find the average weight of both the combined classes :

The average weight of a class of 40 students in 30 and the average weight of a class of 20 students is 15. Find the average weight of both the combined classes:

In a class there are total 70 students. The average weight of 26 girls is 28 kg and average weight of the remaining students is 35 kg. What will be the average weight(in kg) of all 70 students?

The average weight of 25 students of a class is 28 kg. If the average weight of all the boys is 30 kg and average weight of all the girls is 25 kg, then find the number of boys in the class.

If the average weight of 6 students is 50 kg , that of 2 students is 51 kg and that of rest of 2 students is 55 kg , then the average weight of all the students is