document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=27859>Question 27859</A>: <I><SPAN STYLE=\"word-break: break-all;\"> For a school fund raiser, Jay sold 12 boxes of stationary adn 8 boxes of envelopes, for a total of $41.00. Sue sold 18 boxes of stationary and 16 boxes of envelopes, for a total of $68.50. How much did one box of envelopes cost?\r<BR>\n" );
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document.write( "Any help with this would be greatly appreciated!  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #15174 by </B><A HREF=/tutors/aboutme.mpl?userid=Paul><B>Paul(988)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Paul><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=15174\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let the satonary be x<BR>\n" );
document.write( "Let the envelopes by y<BR>\n" );
document.write( "12x+8y=41 --> solve for y<BR>\n" );
document.write( "8y=41-12x<BR>\n" );
document.write( "y=5.125-1.5x (subsititon)\r<BR>\n" );
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document.write( "18x+16y=68.50<BR>\n" );
document.write( "Subsitute\r<BR>\n" );
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document.write( "18x+16(5.125-1.5x)=68.50<BR>\n" );
document.write( "18x+82-24x=68.5<BR>\n" );
document.write( "-6x=-13.5<BR>\n" );
document.write( "x=2.25\r<BR>\n" );
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document.write( "y=5.125-1.5(2.25)<BR>\n" );
document.write( "y=1.75\r<BR>\n" );
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document.write( "Hence, one box of envelop costs about $1.75.<BR>\n" );
document.write( "Paul. </SPAN>\n" );
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