document.write( "Question 145549: A livestock pen is built in the shape of a rectangel that is twice as long as it is wide. The perimeter is 48ft. If the material used to build the pen is $1.75 per foot for the longer sides and $2.25 per foot for the shorter sides, find the cost to build the pen. \n" ); document.write( "
Algebra.Com's Answer #106260 by ankor@dixie-net.com(22740)\"\" \"About 
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A livestock pen is built in the shape of a rectangle that is twice as long as it is wide. The perimeter is 48ft. If the material used to build the pen is $1.75 per foot for the longer sides and $2.25 per foot for the shorter sides, find the cost to build the pen.
\n" ); document.write( ":
\n" ); document.write( "Let x = the width of the pen
\n" ); document.write( "then
\n" ); document.write( "2x = the length
\n" ); document.write( ":
\n" ); document.write( "Perimeter
\n" ); document.write( "2L + 2W = 48
\n" ); document.write( "simplify
\n" ); document.write( "L + W = 24
\n" ); document.write( "Substitute for L and W
\n" ); document.write( "2x + x = 24
\n" ); document.write( "x = \"24%2F3\"
\n" ); document.write( "x = 8 ft is the width
\n" ); document.write( "and
\n" ); document.write( "16 ft is the length
\n" ); document.write( ";\r
\n" ); document.write( "\n" ); document.write( "Find the cost
\n" ); document.write( "1.75(2(16)) + 2.25(2(8))
\n" ); document.write( "1.75(32) + 2.25(16) =
\n" ); document.write( " 56 + 36 = $92 \n" ); document.write( "
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