The sum of the present ages of 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?
Choose the correct choice.
A) 11 years B) 17 years C) 18 years D) 20 years E) 58 years
Let the present ages of son and father be x and (60 - x) years respectively.   Then, (60 - x) - 6 = 5(x - 6)   6x = 84 =&gt; x = 14   Son's age after 6 years = (x + 6) = 20 years.   Answer:20 years
<result>D</result>
The sum of the present ages of 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?