document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=242180>Question 242180</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Denise bought 50 postage stamps for which she paid $13.00. Some were 20-cent stamps and some were 40-cent stamps. How many of each did she buy? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #177302 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=177302\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> X+Y=50 OR X=50-Y<BR>\n" );
document.write( ".20X+.40Y=13<BR>\n" );
document.write( ".20(50-Y)+.40Y=13<BR>\n" );
document.write( "10-.20Y+.40Y=13<BR>\n" );
document.write( ".20Y=13-10<BR>\n" );
document.write( ".20Y=3<BR>\n" );
document.write( "Y=3/.20<BR>\n" );
document.write( "Y=15 40 CENT STAMPS WERE BOUGHT.<BR>\n" );
document.write( "50-15=35 20 CENT STAMPS WERE BOUGHT.<BR>\n" );
document.write( "PROOF:<BR>\n" );
document.write( ".20*35+.40*15=13<BR>\n" );
document.write( "7+6=13<BR>\n" );
document.write( "13=13 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );