arithmetic - the sum of the present ages of a jackson and his son is 60 years six years ago jacksons age was five times the age of the son after 6 years sons age will be - skillgun

Let the present ages of son and Jackson be x and (60 -x) years respectively.
Then, (60 - x) - 6 = 5(x - 6)
54 - x = 5x - 30
6x = 84
x = 14.
Son's age after 6 years = (x+ 6) = 20 years..