document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=711566>Question 711566</A>: <I><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "the coffee shop sold 350 cup cups of coffee this week and collected $230 in sales. Large cups sell for $.80 and the regular size sells for $.60. Determine the number of regular size cups of coffee. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #437510 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley79><B>checkley79(3341)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley79><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=437510\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> X+Y=350<BR>\n" );
document.write( "OR <BR>\n" );
document.write( "X=350-Y<BR>\n" );
document.write( ".80X+.60Y=230<BR>\n" );
document.write( ".80(350-Y)+.60Y=230<BR>\n" );
document.write( "280-.80Y+.60Y=230<BR>\n" );
document.write( "-.20Y=230-280<BR>\n" );
document.write( "-.20Y=-50<BR>\n" );
document.write( "Y=-50/-.20<BR>\n" );
document.write( "Y=250 CUPS OF $.60 COFFEE WAS SOLD.<BR>\n" );
document.write( "X+250=350<BR>\n" );
document.write( "X=350-250<BR>\n" );
document.write( "X=100 CUPS OF $.80 COFFEE.<BR>\n" );
document.write( "PROOF:<BR>\n" );
document.write( ".80*100+.60*250=230<BR>\n" );
document.write( "80+150=230<BR>\n" );
document.write( "230=230 </SPAN>\n" );
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