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 one
A) 27 years  B) 28 years  C) 29 years  D) 20 years  E) 17 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?