Hi
father is 4 times as old as his old as his son
Let x and 4x represent the son and father's ages NOW repectively
Question states***after 24 yrs...
4x+24 = 2(x+24)
Solving for x
2x = 24
x = 12, the son's age now. His father is 48 now
CHECKING our Answer***after 24 yrs...
72 = 2*36 = 72