document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=960482>Question 960482</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Aquilla buys 50 stamps, some for 10c and some for 20c. If she spend 6,40 altogether, how many 10c stamps does 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 #808279 by </B><A HREF=/tutors/aboutme.mpl?userid=CubeyThePenguin><B>CubeyThePenguin(3113)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=CubeyThePenguin><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/cgi-bin/show-face.mpl?user=CubeyThePenguin><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=808279\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x = number of 10c stamps<BR>\n" );
document.write( "y = number of 20c stamps\r<BR>\n" );
document.write( "\n" );
document.write( "x + y = 50<BR>\n" );
document.write( "10x + 20y = 640 ---> x + 2y = 64\r<BR>\n" );
document.write( "\n" );
document.write( "x + y = 50<BR>\n" );
document.write( "-x - 2y = -64<BR>\n" );
document.write( "-------------------<BR>\n" );
document.write( "-y = -14<BR>\n" );
document.write( "y = 14\r<BR>\n" );
document.write( "\n" );
document.write( "She bought x = 36 10c stamps. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );