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
x = 14.
Son’s age after 6 years = (x+ 6) = 20 years..
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 six years son’s age will be
54 – x = 5x – 30