Help with maths, won't take long, please help :)

Hi guys, got a questions and I thought I had the answer but the mark scheme says it's wrong.

'Jasmin is 13 years old. Her mother tells her 'two years ago, you were less than 1/3 of my age, and in two years time, you will be more than 1/4 of my age. What are the possible ages for her mother?'

I did this by doing:
13-2 is less than 1/3x

and then

13+2 is greater than 1/4x

Simplified this comes down to her mum being between 33 and 60, but this is wrong. Is anyone able to tell me where I'm going wrong? Any help is appreciated

What does the mark scheme say? Your reasoning looks to be correct

It says 36-57

Ohh I see, I'm really sorry! Where you (and I) went wrong is that the mother's age 2 years ago is x - 2 and in 2 years time is x + 2 so you should have 11< 1/3(x-2) and 15>1/4(x+2) then you get 35<x<58 so x is 36-57