Was 11 minutes quick enough?
Alison is twice as old as mike.
[1] A = 2M
4 years ago, Alison was three times as old as Mike.
[2] (A - 4) = 3(M-3)
Substitute [1] and [2]
1. (2M - 4) = 3(M-3)
2. 2M - 4 = 3M - 9
3. M = 5
Now how old is Alison? (Hint: Substitute M back in [1])
. But he doesn't go on anymore for some reason 
.
