There are three sections A, B and C in class VIII of a school. The ratio of the number of students in A, B and C is ` 2 : 3 : 4`. The section which has neither the maximum number of students has a strength of 30. Find the total strength of the three sections.

There are three sections A, B and C in class X of a school. The average weight of all the students in classes A and B together is 26 kg. The average weight of all students in classes B and C together is 24 kg. What is the average weight of the students in all the three classes put together. If the average weight of the students in the classes A, B and C are 24 kg, 27 kg and 21 kg respectively.

The total number of students in sections A and B ofa class is 72. The ratio of the number of students in A and B is 7: 5. The average weight(in kg) of the students in section B is 20% more than that of the studentsin section A.If the average weight of all the students in the class is 52 kg, then whatis the average weight (in kg) of the students in section B?

The ratio of boys and girls in sections A,B,C and D of class VI is especially.7:5,5:3,3:2 and 2:1. If the number of students in each of the sections is equal then maximum number of bys are enrolled in section A b.B c.C d.D D

The ratio of the number of students of three class is 2:3:5 .If 20 students are added in each class then the ratio becomes 4:5:7 .Find the number of student in each class before adding .

In a school there are two sections, namely A and B, of class X. there are 30 students in section A and 28 students in section B. find the minimum number of books required for their class library so that they can be distributed equally among students of section A ore section B.