Salim's age is 10 years. His grandfather's age is 62 years. After how many years will his grandfather's age be five times that of Salim?

The present age of A and B are in the ratio 5: 4. After 10 years the ratio becomes 7: 6. Find the present age of A.

Ram has 5 daughters. The average age of these 5 sisters is 28 years. The youngest one is 16 years old. What was the average age of the 4 daughters before the youngest one was born?

In a school, $${3\over 8}$$ of the number of students are girls and the rest are boys. One-third of the number of boys are below 10 years and $${2\over 3}$$ of the number of girls are also below 10 years. If the number of students of age 10 or more years is 260, then the number of boys in the school is:

If A's income is 3/5 times of B's income and C's income is 6/5 times of B's income then the ratio of C's income to A's income is -

The respective ratio of, the present age of a Monika and Divya is 7 : 1. Four years ago the respective ratio of their age was 19 : 1. What will be the Monika’s age four years from now?

The average age of three girls is 15 years if their ages are in the ratio 3 : 5 : 7, what will be the age of the youngest girl?

Six years ago, the ratio of the ages of Karn and Sahil was 6 : 5. Four years hence, the ratio of their ages will be 11 : 10. What is Sahil’s age at present?