Question 953986
Paul is four years older than Joe. Eight years ago, he was twice as old as Joe was then. How old are Paul and Joe now?
***
let x=Joe's age
x+4=Paul's age
..
8 yrs ago:
x+4-8=x-4=Paul's age
x-8 = Joe's age
x-4=2(x-8)
x-4=2x-16
x=12
x+4=16
Joe's age=12
Paul's age=16