document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1179776>Question 1179776</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A contractor buys 15 yd2 of nylon carpet and 26 yd2 of wool carpet for $1345. A second purchase, at the same prices, includes 10 yd2 of nylon carpet and 20 yd2 of wool carpet for $990. Find the cost per square yard of the wool carpet. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #809372 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52787)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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/cgi-bin/show-face.mpl?user=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=809372\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "A contractor buys 15 yd2 of nylon carpet and 26 yd2 of wool carpet for $1345. <BR>\n" );
document.write( "A second purchase, at the same prices, includes 10 yd2 of nylon carpet and 20 yd2 of wool carpet for $990. <BR>\n" );
document.write( "Find the cost per square yard of the wool carpet.<BR>\n" );
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document.write( "Write equations as you read \r\n" );
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document.write( "    15N + 26W = 1345       (1)\r\n" );
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document.write( "    10E + 20G =  990       (2)\r\n" );
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document.write( "You need find W.  Use the determinant method (the Cramer's rule)\r\n" );
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document.write( "    W = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2815%2A990+-+10%2A1345%29%2F%2815%2A20-10%2A26%29 ALIGN=MIDDLE  ALT=\"%2815%2A990+-+10%2A1345%29%2F%2815%2A20-10%2A26%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 35  dollars.    <U>ANSWER</U>\r\n" );
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document.write( "Solved.\r<BR>\n" );
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document.write( "Do not be scared seeing this long formula filled with numbers.\r<BR>\n" );
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document.write( "You can get the answer in &nbsp;ONE &nbsp;CLICK &nbsp;copying this formula into &nbsp;Excel spreadsheet <BR>\n" );
document.write( "or using this convenient online calculator www.desmos.com\r<BR>\n" );
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document.write( "On the &nbsp;Determinants' method for solving systems of two linear equations in two unknowns see the lesson \r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=http://www.algebra.com/algebra/homework/coordinate/lessons/Solution-of-the-lin-syst-of-two-eqns-with-two-unknowns-using-det.lesson>Solution of the linear system of two equations in two unknowns using determinant</A> \r<BR>\n" );
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document.write( "in this site.\r<BR>\n" );
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document.write( "Also, &nbsp;you have this free of charge online textbook in &nbsp;ALGEBRA-I &nbsp;in this site\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson>ALGEBRA-I - YOUR ONLINE TEXTBOOK</A>.\r<BR>\n" );
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document.write( "The referred lesson is the part of this online textbook under the topic &nbsp;\"<U>Systems of two linear equations in two unknowns</U>\".\r<BR>\n" );
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document.write( "Save the link to this online textbook together with its description\r<BR>\n" );
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document.write( "Free of charge online textbook in ALGEBRA-I<BR>\n" );
document.write( "https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson\r<BR>\n" );
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document.write( "to your archive and use it when it is needed.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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