document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=534871>Question 534871</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The attendance at a rock concert is 6700 people. The tickets for this concert cost $40 for floor seats and $25 for all other seats. The total income of sales was 185,500. write a  linear system that models this situation. Using Cramer's rule, substitution method, elimination method, solve this linear system. Then compare all three methods and choose which method you perfer. \r<BR>\n" );
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document.write( "Work I've done<BR>\n" );
document.write( "40x+25y=185,500<BR>\n" );
document.write( "I need help to create the other equation for this linear system </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #351677 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=351677\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> f+a=6700<BR>\n" );
document.write( "a=6700-f<BR>\n" );
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document.write( "40f+25a=185500<BR>\n" );
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document.write( "40f+25(6700-f)=185500<BR>\n" );
document.write( "40f-25f+167500=185500<BR>\n" );
document.write( "15f=18000<BR>\n" );
document.write( "f=18000/15<BR>\n" );
document.write( "f=1200 floor<BR>\n" );
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document.write( "a=6700-1200<BR>\n" );
document.write( "a=5500 all others<BR>\n" );
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document.write( "40*1200+25*5500=<BR>\n" );
document.write( "48000+137500=185500 </SPAN>\n" );
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