document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1073599>Question 1073599</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A contractor buys 15 yd^2 of nylon carpet and 26 yd^2 of wool carpet for $1085. A second purchase, at the same prices, includes 10 yd^2 of nylon carpet and 20 yd^2 of wool carpet for $790. 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 #688419 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=688419\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A contractor buys 15 yd^2 of nylon carpet and 26 yd^2 of wool carpet for $1085. A second purchase, at the same prices, includes 10 yd^2 of nylon carpet and 20 yd^2 of wool carpet for $790. Find the cost per square yard of the wool carpet.<BR>\n" );
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document.write( "15n + 22w = 1085<BR>\n" );
document.write( "10n + 20w = 790<BR>\n" );
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document.write( "Modify::<BR>\n" );
document.write( "10*15n + 10*22w = 10*1085<BR>\n" );
document.write( "15*10n + 15*20w = 15*790<BR>\n" );
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document.write( "Subtract and solve for \"w\"::<BR>\n" );
document.write( "300w - 220w = 15*790-10*1085<BR>\n" );
document.write( "80w = 1000<BR>\n" );
document.write( "w = $12.50 (cost per yd^2 of wool carpet)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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