13 June, 20:19
Kathy is 6 years younger the Bill. Twelve years ago, Bill was twice as old as kathy was then. How old are they now?
13 June, 20:35
k = Kathy's age now
b = Bill's age now
(2) b-12=2 x (k-12)
(1) - k+b=12
Add (1) and (2)
Kathy is 18 and Bill is 24
(2) b-12=2 x) k-12)
24-12=2 x (18-12)
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» Kathy is 6 years younger the Bill. Twelve years ago, Bill was twice as old as kathy was then. How old are they now?