document.write( "Question 174170: A poster is 25cm taller than it is wide. It is mounted on a piece of cardboard so that there is a 5cm border on all sides. If the area of the border alone is 1350cm^2, what are the dimensions of the poster? \n" ); document.write( "
Algebra.Com's Answer #129139 by Mathtut(3670)\"\" \"About 
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lets call the width x and the length y=x+25 of the poster......the cardboard area minus the poster area would give us the area of the border(which is 1350).\r
\n" ); document.write( "\n" ); document.write( "the cardboard area would be (x+5)(x+25+5)=(x+5)(x+30)=\"x%5E2%2B35x%2B150\"\r
\n" ); document.write( "\n" ); document.write( "the area of the poster is x(x+25)=\"x%5E2%2B25x\"
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\n" ); document.write( "so \"x%5E2%2B35x%2B150-x%5E2-25x=1350\"=\"10x=1200\"
\n" ); document.write( ":
\n" ); document.write( "\"highlight%28x=120%29\"cm in width
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\n" ); document.write( "\"highlight%28y=120%2B25=145%29\"cm in length\r
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