Question 997008
Peter's present age is athird that of his father. In 10years time peter will be ahalf his father's age then. How old is peter now?

let x=peter's age
3x=father's age
in ten years:
x+10=peter's age
3x+10=father's age
3x+10=2(x+10
3x+10=2x+20
x=10
 How old is peter now? 10