NEED HELP QUICKK!!!

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])

Let Mike's current  age  = M  and Alison's =  2M

4 years ago we  had that

2M - 4  =   3 (M - 4)      simplify

2M - 4  =  3M  - 12      add  12 to both sides, subtract 2M from both sides

8  = M

2M  =  16  = Alison's age now