Hello!
This can be represented in a system of equations below, with width(w) and length (L).
L=4w
2l+4w=24
We can plug in our L value and solve for w in the second equation.
2(4w)+2w=24
8w+2w=24
10w=24
w=2.4
Our width is 2.4 meters.
I hope this helps!