Question 344998
let margo's age be x ,
Alice was 3x years,  2 years ago
now alice's age = 3x +2
...
5 years hence
Alice will be (3x+2)+5
3x+2+5 = 5x
3x+7=5x
2x=7
x= 3.5 years
Margo = 3.5 years now
alice = 3*3.5+2
=12.5 years