The average age of 11 players of a cricket team decreases by 2 months when two new players are included in the team repl…

The average age of all the students of a class is 18 years. The average age of boys of the class is 20 years and that of…

The average score of a class of boys and girls in an examination is A. The ratio of boys and girls in the class is 3 : 1…

The average age of 20 boys in a class is 12 years. 5 new boys are admitted to the class whose average age is 7 years. Th…

The average of 12 numbers is 15 and the average of the first two is 14. What is the average of the rest?

Out of 10 teachers of a school, on teacher retires and in place of him a new teacher 25 years old joins. As a result of …

The average weight of a group of 75 girls was calculated as 47 kgs. It was later discovered that the weight of one of th…

The average of the reciprocals of x and y is-