The average age of a group of 8 persons was 14 years. A person with age 28 years left the group and a new person with age 16 years joined the group. Find the new average age of the group.

Average age of a group of 30 boys is 16 years. A boy of age 19 leaves the group and a new boy joins the group. If the new average age of the group is 15.8 years, find the age of the new boy.

The average age of a group of persons going for a picnic is 16.75 years. 20 new persons with an average age of 13.25 years join the group on the spot due to which the average of the group becomes 15 years. Find the number of persons initially going for the picnic.

The average age of a group of persons going for picnic is 16 years. Twenty new persons with an average age of 15 years join the group on the spot due to which their average age becomes 15.5 years. The number of persons initially going for picnic is (a) 5 (b) 10 (c) 20 (d) 30

The average age of a group of persons going for picnic is 16 years. Twenty new persons with an average age of 15 years join the group on the spot due to which their average age becomes 15.5 years. The number of persons initially going for picnic is

The average age of 8 persons is increased by 2 years, when one of them, whose age is 24 years is replaced by a new persons. The age of the new person is

The average age of 25 men is 28 years. 5 new men of an average age of 25 years joined them. Find the average age of all the men together.

The average age of a group of men and women is 30years.If average age of men is 32and that of women is 27, then the percentage of women in the group is-