Question

a father's age is three time thatof his son after fifteen year's he will be twice as great how old are they

Answer 1

let father's age be x and son's age be y
x=3y
x+15=2(y+15)
3y+15=2y+30
y=15years
x=3×15=45years

Answer 2

Let son age =x
father's age=3x
..
After 15 years
Son age = x+15
Father's age = 3x+15
..

3x + 15=2 (x+15)
3x + 15=2 x +30
x = 15.. son age now
father's age now = 3x = 3x15= 45

may it hepls u mark as brainliest