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?
Select the correct option
A) 77 years
B) 67 years
C) 20 years
D) 55 years
E) 61 years
Explanation:   20 yearslue : (60 - x) - 6 = 5(x - 6)   Answer: 20 years
<result>C</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 6 years, son's age will be?