There were 35 students in a hostel. If the number of the students is increased by 7, then the expenses of the mess incre…

The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, then …

The average of 30 numbers is 40 and that of other 40 numbers is 30. The average of all the numbers is :

Average of n numbers is a. The first number is increased by 2, second one is increased by 4, the third one is increased …

There are two sections A and B of a class, consisting of 36 and 44 students' respectively. If the average weight of sect…

The average score of a cricketer for ten matches is 38.9 runs. If the average for the first six matches is 42, then find…

Average weight of 25 students of a class is 50 kg. If the weight of the class teacher is included , the average is incre…

The average marks of a student in 8 subjects is 87. Of these, the highest marks are 2 more than the one next in value. I…