Two years ago the mean age of 40 people was 11 years. Now a person left the group and the mean age has changed to 12 years. Find the age of the person who left the group.

Five years ago mean age of a family was 25 years. What is the present mean age of the family?

Age of a girl is 11 years what is the age after x years?

The sum of the ages of three persons is 40 years . What will be the sum of their ages after 3 years

The mean ago of 25 teachers in a schools is 40 years. A teacher retires at the age of 60 years and a new teacher is appointed in his place . If now the mean age of the teachers in this schools is 39 years, then the age (in years) of the newly appointed teacher is

Lakshmi is 11 years old. Her mother's age is 4 times to her's. What is the age of the mother ?

Mean age of 25 members of a club was 38 years. If 5 members with mean age of 42 years have left the club, what is the present mean age of the club members?

Sum of the present ages of two friends are 23 years, five years ago product of their ages was 42. Find their ages 5 years hence.

From the employees of a company 5 persons are selected to represent them in the managing committee of the company. The particulars of 5 persons are as follows : A person is selcted at random from this group to act as a spokesperson. Find the probability that the spokeperson wll be either male or above 35 years.

The sum of the ages of two friends is 20 years. Four years ago,the product of their ages in years was 48. Is the above situation possible ? If so, determine their present ages