document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=971689>Question 971689</A>: <I><SPAN STYLE=\"word-break: break-all;\"> John spends $ 8.40 in buying 100 postage stamps. If x of them are 7 cents stamps & y are 9 cents stamps, find no. of each type of stamps? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #594347 by </B><A HREF=/tutors/aboutme.mpl?userid=rfer><B>rfer(16322)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rfer><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=594347\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x+y=100<BR>\n" );
document.write( "x=100-y<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "0.07x+0.09y=8.40<BR>\n" );
document.write( "0.07(100-y)+0.09y=8.40<BR>\n" );
document.write( "7-0.07y+0.09y=8.40<BR>\n" );
document.write( "0.02y=8.40-7<BR>\n" );
document.write( "y=1.40/0.02<BR>\n" );
document.write( "y=70<BR>\n" );
document.write( "x=100-70<BR>\n" );
document.write( "x=30 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );