The sum of the present ages of a father and his son is 62 years. Six years ago, father's age was four times the age of the son. After 6 years, son's age will be:
Select the correct option:  A) 12 years  B) 14 years  C) 18 years  D) 20 years  E) 22 years
Let the present ages of son and father be x and (62 - x) years respectively.   Then, (62 - x) - 6 = 4(x - 6)   56 - x = 4x - 24   x = 16   The son's age after 6 years will be 22.   The answer is 22 years.
<result>E</result>
The sum of the present ages of a father and his son is 62 years. Six years ago, father's age was four times the age of the son. After 6 years, son's age will be: