document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1140590>Question 1140590</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 80% of the people at a concert were adults. 75% of the children at a concert were boys. There were 36 more boys than girls.\r<BR>\n" );
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document.write( "a. How many boys were there at a concert?<BR>\n" );
document.write( "b. Some boys left halfway through the concert after which 10% of the remaining people at the concert were boys. How many boys left the concert halfway?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #761181 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=761181\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+ ALIGN=MIDDLE  ALT=\"+x+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = total number at the concert<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.2%2A.75x+=+.15x+ ALIGN=MIDDLE  ALT=\"+.2%2A.75x+=+.15x+\"   DISABLED_style= \"max-width:90%; height:auto;\" > is the number of boys<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.2%2A.25x+=+.05x+ ALIGN=MIDDLE  ALT=\"+.2%2A.25x+=+.05x+\"   DISABLED_style= \"max-width:90%; height:auto;\" > is the number of girls<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.15x+=+.05x+%2B+36+ ALIGN=MIDDLE  ALT=\"+.15x+=+.05x+%2B+36+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.1x+=+36+ ALIGN=MIDDLE  ALT=\"+.1x+=+36+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+360+ ALIGN=MIDDLE  ALT=\"+x+=+360+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "(a)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.15%2A360+=+54+ ALIGN=MIDDLE  ALT=\"+.15%2A360+=+54+\"   DISABLED_style= \"max-width:90%; height:auto;\" > is the number of boys at concert<BR>\n" );
document.write( "(b)<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+ ALIGN=MIDDLE  ALT=\"+n+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = number of boys who left concert<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.1%2A%28+x+-+n+%29+=+54+-+n+ ALIGN=MIDDLE  ALT=\"+.1%2A%28+x+-+n+%29+=+54+-+n+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.1%2A%28+360+-+n+%29+=+54+-+n+ ALIGN=MIDDLE  ALT=\"+.1%2A%28+360+-+n+%29+=+54+-+n+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+36+-+.1n+=+54+-+n+ ALIGN=MIDDLE  ALT=\"+36+-+.1n+=+54+-+n+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.9n+=+54+-+36+ ALIGN=MIDDLE  ALT=\"+.9n+=+54+-+36+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.9n+=+18+ ALIGN=MIDDLE  ALT=\"+.9n+=+18+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+=+20+ ALIGN=MIDDLE  ALT=\"+n+=+20+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "20 boys left the concert<BR>\n" );
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document.write( "check:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+360+-+20+=+340+ ALIGN=MIDDLE  ALT=\"+360+-+20+=+340+\"   DISABLED_style= \"max-width:90%; height:auto;\" > people remain after 20 boys left<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.1%2A340+=+34+ ALIGN=MIDDLE  ALT=\"+.1%2A340+=+34+\"   DISABLED_style= \"max-width:90%; height:auto;\" > boys remain after 20  boys left<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+34+%2B+20+=+54+ ALIGN=MIDDLE  ALT=\"+34+%2B+20+=+54+\"   DISABLED_style= \"max-width:90%; height:auto;\" > is number of boys starting out<BR>\n" );
document.write( "OK\r<BR>\n" );
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