document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=69618>Question 69618</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The cd's at a store were on sale for $10 and $12.  THE counter at the exit says 500 people left with a cd (limit 1 per customer) and the register contains $5750. Maria wrote a system of equations for the number of $10 and $12 CD's.  What was the system of equations. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #49593 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley75><B>checkley75(3666)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley75><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=49593\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> X+Y=500 X=500-Y<BR>\n" );
document.write( "10X+12Y=5750 NOW REPLACE X WITH (500-Y) & SOLVE FOR Y<BR>\n" );
document.write( "10(500-Y)+12Y=5750<BR>\n" );
document.write( "5000-10Y+12Y=5750<BR>\n" );
document.write( "2Y=5750-5000<BR>\n" );
document.write( "2Y=750<BR>\n" );
document.write( "Y=750/2<BR>\n" );
document.write( "Y=375 THE NUMBER OF $12 CD'S.<BR>\n" );
document.write( "NOW SUBSTITUTE 12 FOR Y & SOLVE FOR X<BR>\n" );
document.write( "X=275=500<BR>\n" );
document.write( "X=500-275<BR>\n" );
document.write( "X=225 THE NUMBER OF $10 CD'S.<BR>\n" );
document.write( "PROOF<BR>\n" );
document.write( "10*225+12*275=5750<BR>\n" );
document.write( "2250+3300=5750<BR>\n" );
document.write( "5750=5750  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );