A man's age 15 years hence would be two times his age six years ago. Find his present age

A person says "Twelve years hence my age will be 3 times my age 12 years ago'. Find his present age.

A man’s age after 15 years will be the square of his age 15 years ago. What is his present age?

Twelve years hence Ravi's age will be nine times his age twelve years ago, find the present age of Ravi.

Sixteen years hence, a man's age will be 9 times his age 16 years ago. Find his age 5 years hence

Sixteen years hence a man's age will be 9 times his age 16 years ago. Find his age 5 years hence.

A's age is seven times B's age. Four years hence, the age of A will be six times B's age. Find the present ages (in years), of person A and B.

Aman's age is there times his son's age. Ten years ago he was five times his son's age. Find their present ages.