Ali is in a minivan with x children . Let y be the average (arithmetic mean ) of the children's ages . If Ali's age is 6 times y , then her age is what fraction of the total ages of all the people in the minivan ?

In a group of 150 people , (2)/(5) are men, (1)/(3) are women and the rest are children . The average age of the women is (4)/(5) of the average age of the men . The average age of the children is (1)/(5) of the average age of the men . If the average age of the men is 50 years, then the average age of all the people in the group is :

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

How many children are there in the group ? (i) Average age of the children in this group is 15 years. The total ages of all the children in this group is 240 years. (ii) The total age of all the children in the group and the teacher is 264 years. The age of the teacher is 9 years more than average age of the children.

A father's age is three times the sum of the ages of his two children. After 5 years his age will be 2 times the sum of their ages. Find the present age of the father.

A father's age is three times the sum of the ages of his two children. After 5 years his age will be two times the sum of their ages. Find the present age of the father.

Age of Jhilmil's sister is 2 yrs 7m 12 days. Jhilmil's age is 5 times the age of her sister. Let's find the age of Jhilmil.

The average age of children of Class VII is 12 years and 3 months. Express this age in seconds.