document.write( "Question 275225: A rectangular lot whose perimeter is 1600 feet is fenced along three sides. An expensive fencing along the lots length costs $20 per foot. An inexpensive fencing along the two sides costs only $5 per foot. the total cost of the fencing along the three sides is $13,000. What are the lots dimensions? \n" ); document.write( "
Algebra.Com's Answer #200812 by Greenfinch(383)\"\" \"About 
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Let the length of the fence be X
\n" ); document.write( "then the width is 800 - X
\n" ); document.write( "Cost is 20X +2x5x(800 -X) = 13000
\n" ); document.write( "20X + 8000 - 10X = 13000
\n" ); document.write( "10X = 5000
\n" ); document.write( "X = 500
\n" ); document.write( "So the length is 500 feet and the width is 300 feet
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