document.write( "Question 494261: The area of a rectangular field is 9000 square meters. If the ratio of the width to the length is 5 is to 8, what is the length of the rectangular field in meters? \n" ); document.write( "
Algebra.Com's Answer #335589 by Earlsdon(6294)\"\" \"About 
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Since you have the ratio of the width to the length, this is 5 t0 8, then you know that the width is some multiple of 5 and the length is the same multiple of 8.
\n" ); document.write( "We'll let this multiple be x, so you have \"W+=+5x\" and \"L+=+8x\", and the area is expressed as:
\n" ); document.write( "\"%285x%29%2A%288x%29+=+9000\" Simplify and solve for x:
\n" ); document.write( "\"40x%5E2+=+9000\" Divide both sides by 40.
\n" ); document.write( "\"x%5E2+=+225\" Take the square root of both sides.
\n" ); document.write( "\"x+=+15\" This is the multiple, so...
\n" ); document.write( "\"5x+=+5%2815%29\" = \"75\" This is the width, W.
\n" ); document.write( "\"8x+=+8%2815%29\" = \"120\" This is the length, L.
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