A father is three times as old as his son. In 12 years time, he will be twice as old as his son. The

Question

A father is three times as old as his son. In 12 years time, he will be twice as old as his son. The sum of the present ages of the father and the son is\

Professor PC Thomas Classes · Answer

(b) : Let age of father be ' $x$ ' years and age of son be ' $y$ ' years.\ According to the question, $x=3 y$\ and $x+12=2(y+12) \Rightarrow x-2 y=12$ \From (i) and (ii), we get $x=36, y=12$\ $	herefore \quad x+y=48$ years\