If the average marks of 30 students of section A is 55 and the average marks of 30 students of section B is 60 ,then find the combined average of both the sections.

A class is divided into two sections A and B . Passing average of 20 students of section A is 80% and passing average of 30 students of section B is 70% . What is the passing average of both the sections ?

If the average mark of 15 students is 60 and the average mark of another 10 students is 70, then find the average mark of 25 students. The following are the steps involved in solving the above problem. Arrange them in sequential order. (A) Average marks of 25 students = (1600)/(25) = 64 (B) The total marks of 15 students = 15 xx 60 = 900 The total marks of 10 students = 10 xx 70 = 700 (C) The total marks of 25 students = 900 + 700 = 1600

The average marks obtained by 100 candidates in an examinatiion are 45. If the average marks of the passed students are 50 while the average marks of the failed students is 40. Then find the number of students who passes the examination.

In a class, there are 75 students and their average marks in the annual examination is 35. If the average marks of passed students is 55 and average marks of failed students is 30, then find out the number of students who failed.

Marks of 6 students are 30, 72, 87, 68, 53 and x. If average marks of these students be 60, find the value of x

There are 25 boy students and 20 girls students in a school. The average of marks in math of 25 boy students is 52 and the average of marks in math of 20 girl-students is 48. Find the average of marks obtained by the students of the school as a whole.

Average marks of 15 students ofclassfirst is 160. Avearge marks of 10 students ofclass second is 120. Average marks of 15 students of class third is 180. What will be the average marks of students of all the classes together?

The average marks of the students in four sections A, B, C and D together is 60%. The average marks of the students of A, B, C and D individually are 45%, 50%, 72% and 80% respectively. If the average marks of the students of sections A and B together is 48% and that of the students of B and C together is 60%. What is the ratio of number of students in sections A and D?

The average marks of the students in four sections A, B, C and D together is 60%. The average marks of the students of A, B, C and D individually are 45%, 50%, 72% and 80% respectively. If the average marks of the students of sections A and B together is 48% and that of the students of B and C together is 60%. What is the ratio of number of students in section A and D?

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 :