document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=149640>Question 149640</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Concert tickets cost $2.00/child and $5.00/adult. A group of thirty people<BR>\n" );
document.write( "consisting of children and adults paid a total of $87.00 for the concert. How<BR>\n" );
document.write( "many adults were in the group?\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #109777 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=109777\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> C-Child<BR>\n" );
document.write( "A-Adult<BR>\n" );
document.write( "1.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A%2BC=30 ALIGN=MIDDLE  ALT=\"A%2BC=30\"   DISABLED_style= \"max-width:90%; height:auto;\" >Total tickets sold.<BR>\n" );
document.write( "2.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5A%2B2C=87 ALIGN=MIDDLE  ALT=\"5A%2B2C=87\"   DISABLED_style= \"max-width:90%; height:auto;\" > Total tickets cost. <BR>\n" );
document.write( "Use eq. 1 to solve for A as a function of C.<BR>\n" );
document.write( "1.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A%2BC=30 ALIGN=MIDDLE  ALT=\"A%2BC=30\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=30-C ALIGN=MIDDLE  ALT=\"A=30-C\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Substitute this expression for A in eq. 2,<BR>\n" );
document.write( "2.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5A%2B2C=87 ALIGN=MIDDLE  ALT=\"5A%2B2C=87\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5%2830-C%29%2B2C=87 ALIGN=MIDDLE  ALT=\"5%2830-C%29%2B2C=87\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Solve for C.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=150-5C%2B2C=87 ALIGN=MIDDLE  ALT=\"150-5C%2B2C=87\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-3C=-63 ALIGN=MIDDLE  ALT=\"-3C=-63\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=C=21 ALIGN=MIDDLE  ALT=\"C=21\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Use eq. 1 to solve for A.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=30-C ALIGN=MIDDLE  ALT=\"A=30-C\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=30-21 ALIGN=MIDDLE  ALT=\"A=30-21\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=9 ALIGN=MIDDLE  ALT=\"A=9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "9 adult and 21 children tickets were sold. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );