<PRE><B>Question 570930</B>
Please explain how to solve: a rectangular pool 20 feet wide and 60ft long is surrounded by a walkway of uniform width. If the total area of the walkway is 516 sq ft, how wide is the walkway?
-----------------
w = the width of the walkway
The outside dimensions are 20 + 2w by 60 + 2w
------------
The area inside the walkway is (20 + 2w)*(60 + 2w)
The area of the pool is 20*60 = 1200 sq ft
-----
516 = (20 + 2w)*(60 + 2w) - 1200
Solve for w
</PRE>