document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=936063>Question 936063</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A man bought a number of horses for $900. After training them, he sold all but one to a dude ranch owner at a profit of $110 each, thereby realizing a profit of 100% on the whole transaction. How many horses did he buy? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #569509 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=569509\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> He bought the horses for $900 and made a profit of <BR>\n" );
document.write( "100%, so he sold the horses for $1800<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+%2B+1+ ALIGN=MIDDLE  ALT=\"+n+%2B+1+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = the number of horses he bought<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+ ALIGN=MIDDLE  ALT=\"+n+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = the number of horses he sold<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "The price he paid for each horse was:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+900+%2F+%28+n+%2B+1+%29+ ALIGN=MIDDLE  ALT=\"+900+%2F+%28+n+%2B+1+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "------------------<BR>\n" );
document.write( "The amount he received for each horse when he sold them was:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1800+%2F+n+ ALIGN=MIDDLE  ALT=\"+1800+%2F+n+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "------------------<BR>\n" );
document.write( "His profit for each horse was:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1800%2Fn+-+900%2F%28+n%2B1+%29+=+110+ ALIGN=MIDDLE  ALT=\"+1800%2Fn+-+900%2F%28+n%2B1+%29+=+110+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Multiply both sides by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n%2A%28+n%2B1+%29+ ALIGN=MIDDLE  ALT=\"+n%2A%28+n%2B1+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1800%2A%28+n%2B1+%29+-+900n+=+110%2An%2A%28+n%2B1+%29+ ALIGN=MIDDLE  ALT=\"+1800%2A%28+n%2B1+%29+-+900n+=+110%2An%2A%28+n%2B1+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1800n+%2B+1800++-+900n+=+110n%5E2+%2B+110n+ ALIGN=MIDDLE  ALT=\"+1800n+%2B+1800++-+900n+=+110n%5E2+%2B+110n+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+110n%5E2+-+790n+-+1800+=+0+ ALIGN=MIDDLE  ALT=\"+110n%5E2+-+790n+-+1800+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+11n%5E2+-+79n+-+180+=+0+ ALIGN=MIDDLE  ALT=\"+11n%5E2+-+79n+-+180+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Use the quadratic formula<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+=+%28+-b+%2B-+sqrt%28+b%5E2+-+4%2Aa%2Ac+%29%29+%2F+%282%2Aa%29+ ALIGN=MIDDLE  ALT=\"+n+=+%28+-b+%2B-+sqrt%28+b%5E2+-+4%2Aa%2Ac+%29%29+%2F+%282%2Aa%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+a+=+11+ ALIGN=MIDDLE  ALT=\"+a+=+11+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+b+=+-79+ ALIGN=MIDDLE  ALT=\"+b+=+-79+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+c+=+-180+ ALIGN=MIDDLE  ALT=\"+c+=+-180+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+=+%28+-%28-79%29+%2B-+sqrt%28+%28-79%29%5E2+-+4%2A11%2A%28-180%29+%29%29+%2F+%282%2A11%29+ ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+=+%28+79+%2B-+sqrt%28+6241+%2B+7920+%29%29+%2F+22+ ALIGN=MIDDLE  ALT=\"+n+=+%28+79+%2B-+sqrt%28+6241+%2B+7920+%29%29+%2F+22+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+=+%28+79+%2B-+sqrt%28+14161+%29%29+%2F+22+ ALIGN=MIDDLE  ALT=\"+n+=+%28+79+%2B-+sqrt%28+14161+%29%29+%2F+22+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+=+%28+79+%2B+119+%29+%2F+22+ ALIGN=MIDDLE  ALT=\"+n+=+%28+79+%2B+119+%29+%2F+22+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+=+198%2F22+ ALIGN=MIDDLE  ALT=\"+n+=+198%2F22+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+=+9+ ALIGN=MIDDLE  ALT=\"+n+=+9+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+%2B+1+=10+ ALIGN=MIDDLE  ALT=\"+n+%2B+1+=10+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "He bought 10 horses<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1800%2Fn+-+900%2F%28+n%2B1+%29+=+110+ ALIGN=MIDDLE  ALT=\"+1800%2Fn+-+900%2F%28+n%2B1+%29+=+110+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1800%2F9+-+900%2F%28+9%2B1+%29+=+110+ ALIGN=MIDDLE  ALT=\"+1800%2F9+-+900%2F%28+9%2B1+%29+=+110+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+200+-+90+=+110+ ALIGN=MIDDLE  ALT=\"+200+-+90+=+110+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+110+=+110+ ALIGN=MIDDLE  ALT=\"+110+=+110+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK\r<BR>\n" );
document.write( "\n" );
document.write( "  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );