Math
posted by Maria on .
I don't get page 50 of algebra with pizzazz!
Please help?
7) Kathy is 6 years younger than bill. 12 years ago bill was twice as old as Kathy was then. How old are they now?

let Bill's present age be x
then Kathy's present age is x6
12 years ago:
Bill was x12
Kathy was x6  12 or x  18
at that time bill was twice as old as Kathy  x12 = 2(x18)
x12 = 2x  36
x = 24
x = 24
so now bill is 24 and Kathy is 18 
Alright thanks I get it now (:
I guess I was just multiplying wrong.