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 10 years, son's age will be:
Select the correct option
A) 12 years  B) 14 years  C) 18 years  D) 24 years  E) 26 years
Explanation:   Let the present ages of son and father be x and (60 -x) years respectively.   Then, (60 - x) - 6 = 5(x - 6)   54 - x = 5x - 30   6x = 84   x = 14.   Son's age after 10 years = (x+ 10) = 24 years..   Answer: 24 years
<result>D</result>
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 10 years, son's age will be: