document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=808934>Question 808934</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Selling cards at a fair.  Cards cost $.50 ea and booth costs $20.  Selling cards in sets of 12 for $10.20.  How many sets of cards do I need to sell to cover my costs? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #487298 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=487298\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Selling cards at a fair. Cards cost $.50 ea and booth costs $20. Selling cards in sets of 12 for $10.20. How many sets of cards do I need to sell to cover my costs?<BR>\n" );
document.write( "-------<BR>\n" );
document.write( "Cost(x) = 20 + 0.5x dollars<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "Revenue(x) = (x/12)10 dollars<BR>\n" );
document.write( "--------------------------------<BR>\n" );
document.write( "Breakeven occurs when cost = revenue::<BR>\n" );
document.write( "Equation::<BR>\n" );
document.write( "20 + 0.5x = (x/12)10<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "Multiply thru by 12 to get<BR>\n" );
document.write( "240 + 6x = 10x<BR>\n" );
document.write( "4x = 240<BR>\n" );
document.write( "x = 60 cards<BR>\n" );
document.write( "------<BR>\n" );
document.write( "# of sets of 12 = 60/12 = 5<BR>\n" );
document.write( "=================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );