L=Length of the rectangular patio
A=Area of the rectangular patio
W=Width of the rectangular patio
f=foot
------------------------------------
L=25/2f
A=(103+1/8)f²=(824/8+1/8)f²=825/8f²
-----------------------------
Now, A=L*W=825/8f²
-------------------------------
USE BODMAS
Therefore:
25/2fW=825/8f²
So...
W=(825/8f²)/(25/2f)
=33/4f