document.write( "Question 42172: I am stuck on this word problem and greatly need assistance! Thank you\r
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document.write( "A garden area is 30 ft long and 20 ft wide. A path of uniform width is set around the edge. If the remaining garden area is 400ft^2, what is the width of the path? \n" );
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Algebra.Com's Answer #27356 by fractalier(6550)![]() ![]() You can put this solution on YOUR website! Well let the path have a width x. \n" ); document.write( "Then the garden with the path will have a length 30 + 2x and a width 20 + 2x. \n" ); document.write( "Since the new area is 400, we have \n" ); document.write( "A = LW \n" ); document.write( "400 = (30 + 2x)(20 + 2x) \n" ); document.write( "400 = 600 + 60x + 40x + 4x^2 \n" ); document.write( "now rearrange and get \n" ); document.write( "4x^2 + 100x + 200 = 0 \n" ); document.write( "x^2 + 25x + 50 = 0 \n" ); document.write( "this does not factor so we use the quadratic \n" ); document.write( "x = (-25 ± sqrt(625-200)) / 2 \n" ); document.write( "x = (-25 ± sqrt(425)) / 2 \n" ); document.write( "there does not seem to be a solution that works...perhaps you need to rephrase the problem correctly... \n" ); document.write( " |