Problema Solution
Caroline has a patio of uniform width around the perimeter of her rectangular pool. The pool measures
22 ft by 12 ft. If the area of the pool and the patio is 504 ft , what is the width of the patio?
Answer provided by our tutors

Let 'x' represent the width of the patio, x>0.
The area of the pool with the patio is:
(22 + 2x)(12 + 2x) = 504
........
click here to see the equation solved for x
........
x = 3 ft
The patio is 3 ft wide.