document.write( "Question 903429: A man built a walk of uniform width around a rectangular pool. If the area of the walk is 145 square feet and the dimensions of the pool are 9 feet by 15 feet, how wide is the walk? \n" ); document.write( "

Algebra.Com's Answer #548007 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi,
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document.write( "     .
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document.write( "Total Area of pool and walk  = (9*15 + 145)ft^2
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document.write( "(9+x)(15+x) = 280ft^2
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document.write( "135 + 24x + x^2 = 280
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document.write( "x^2 + 24x - 145 = 0 (Tossing out the negative solution for unit measure)
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document.write( "(x-5)(x+29) = 0
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document.write( " x = 5ft
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document.write( "walk (on each side)= 2.5ft wide
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