The present age of Mr. Sanyal is three times the age of his son. Six years hence the ratio of their ages will be 5:2. What is the present age of Mr. Sanyal? a. 48 years               b. 50 years      c. 60 years d. 54 years              e. none of these

Explanation

Let present age of Mr. Sanyal be 3x years so his sons age is x yrs.

6 yrs from now the ratio of their ages will be`5:2` so

=>`5/2=(3x+6)/(x+6)`

=>so x=18, present age of Mr. Sanyal is `3x=3 xx 18=54 years`