A man is four times as old as his son. In five years he will be only three times as old as his son. What is the man's present age?
1 Answer
May 1, 2018
Man's present age : 40 years old.
Explanation:
Let man's age =
Let son's age =
Since a man is 4 times as old as his son, therefore
In 5 years, he will only be 3 times as old as his son, therefore
Apply substitution method :
∴