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

When 15 is included in a list of natural numbers, their mean is increased by 2. When 1 is included in this new list, the…

The average salary, per head, of all the workers of an institution is Rs. 60. The average salary of 12 officers is Rs. 4…

The average age of 3 children in a family is 20% of the average age of the father and the eldest child. The total age of…

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

If the average of m numbers is n<sup>2</sup> and that of n numbers is m<sup>2</sup> , then the …

In a group of 120 people, one-fifth are men, one-fourth are women and the rest children. The average age of women is fiv…

The mean temperature of Monday to Wednesday was 37°C and of and of Tuesday to Thursday was 34°C. If the temperat…