The sum of the present ages of a father and his son is 60 years. five years ago, father's age was four times the age of the son. so now the son's age will be:  Select.
A) 5  B) 10  C) 15  D) 20  E) 25
Explanation:   Let the present ages of son and father be x and (60 -x) years respectively.   Then, (60 - x) - 5= 4(x - 5)   55 - x = 4x - 20   5x = 75 x = 15. Answer: 15
<result>C</result>
The sum of the present ages of a father and his son is 60 years. five years ago, father's age was four times the age of the son. so now the son's age will be: