I believe you are missing some of the question but heres what I think it is I think it is going to be 40+x=115 then solve from there
1.2 A$ = 1 US$
22 A$ = x US$ Cross multiply
1.2*x = 22 * 1 Divide by 1.2
x = 22/1.2
x = 18.3 US $
Denote by x the length of the side of the first square and by y the length
of the side of the second square.
We deduce from the figure the following equations:
Answer: the length of the sides are 4 and 10.