The sum of the present ages of a father and his son is 60 years. Six years ago, father's age was five times the age of the son. After 6 years, son's age will be:
Answer: D
Let the present ages of son and father be \(x\) and \((60-x)\) years respectively
Then , \((60-x)-6=5(x-6)\)
\( \Rightarrow \) \(54 - x=5x-30\)
\( \Rightarrow 6x=84\)
\( \Rightarrow x=14 \)
\( \therefore \) Son's age after 6 years = \(( x+ 6)\)= 20 years