document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=382260>Question 382260</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need help with Linear Equation with two variables\r<BR>\n" );
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document.write( "A rectangular lot whose perimeter is 480 feet is fenced along three sides. An expensive fencing along the lot&#697;s<BR>\n" );
document.write( "length costs $16 per foot , and an inexpensive fencing along the two side widths costs only $9 per foot. The total<BR>\n" );
document.write( "cost of the fencing along the three sides comes to $4040. What are the lot&#697;s dimensions? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #270974 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=270974\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A rectangular lot whose perimeter is 480 feet is fenced along three sides. An expensive fencing along the lot&#697;s length costs $16 per foot , and an inexpensive fencing along the two side widths costs only $9 per foot. The total<BR>\n" );
document.write( "cost of the fencing along the three sides comes to $4040. What are the lot&#697;s dimensions?<BR>\n" );
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document.write( "Let i be the inexpensive and e the expensive.<BR>\n" );
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document.write( "Measure Equation: e + 2i = 480 ft.<BR>\n" );
document.write( "Value Equation:: 16e + 9i = 4040<BR>\n" );
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document.write( "Multiply thru the Measure Eq. by 16 to get:<BR>\n" );
document.write( "16e + 32i = 16*480<BR>\n" );
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document.write( "Subtract the Value Eq. from that and solve for \"i\":<BR>\n" );
document.write( "23i = 3640 <BR>\n" );
document.write( "i = 158.26 ft (length of the inexpensive dimension)<BR>\n" );
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document.write( "Substitute into e + 2i = 480 to solve for \"e\":<BR>\n" );
document.write( "e + 2*158.26 = 480<BR>\n" );
document.write( "e = 163.48 ft (length of the expensive dimension)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( " </SPAN>\n" );
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