SOLUTION: a family wants to build a cement walkway of constant width around a 25ft X 30ft rectangular pool. They have enough cement for 504 sq ft. Assuming they use all the cement, how wid

Question 996598: a family wants to build a cement walkway of constant width around a 25ft X 30ft rectangular pool. They have enough cement for 504 sq ft. Assuming they use all the cement, how wide should they make the walkway?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Assign variables to everything.

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A is for the area of the border to surround the rectangular region.

Total area minus given rectangular region area is the border area;

The rest should be easy; the unknown is x.
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