A father is now three times as old as his son fiver year back he was four times as old as his son the age os son (in year) is _____?
A father is now three times as old as his son fiver year back he was four times as old as his son the age os son (in year) is _____?
Explanation
(3x-5) = 4(x-5)
3x -5 = 4x -20
4x -3x = 20 -5
x=15