After 20 years, Manoj will be 5 times as old as he is now. Find his present age.
Let present age of Manoj be x years.
So, five times of his age = 5x
According to question,
5 = x + 20
⇒ 5x – x = 20
⇒ 4x = 20
⇒ x = 20/4 = 5
Thus, at present Manoj is 5 years old.
Correct answer is 5 years