document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=655307>Question 655307</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Erasers cost $6 per carton and pencils cost $7 per carton. If an order comes in for a total of 16 cartons for $100, what was the number of cartons of each bought?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #409049 by </B><A HREF=/tutors/aboutme.mpl?userid=unlockmath><B>unlockmath(1688)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=unlockmath><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=unlockmath><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=409049\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hello, <BR>\n" );
document.write( "Let's have e represent erasers and p for pencils. We can set up 2 equations:<BR>\n" );
document.write( "6e + 7p = 100<BR>\n" );
document.write( "e + p = 16  rewritten as: e=16-p<BR>\n" );
document.write( "Substitution:<BR>\n" );
document.write( "6(16-p)+7p=100<BR>\n" );
document.write( "Expand:<BR>\n" );
document.write( "96-6p+7p=100<BR>\n" );
document.write( "Combine and subtract 96 to get:<BR>\n" );
document.write( "p=4<BR>\n" );
document.write( "e=12<BR>\n" );
document.write( "Make sense?<BR>\n" );
document.write( "RJ<BR>\n" );
document.write( "www.math-unlock.com </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );