document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=683824>Question 683824</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 25 men can do a project in 20 days . 15 men leave the project after working for some timeand the remaining project is completed in the next 37 1/2 days . After how many days did those men leave ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #423770 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=423770\">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=+n+ ALIGN=MIDDLE  ALT=\"+n+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = number of days after starting when 15 men left<BR>\n" );
document.write( "The 25 men work at a rate of ( 1 project ) / ( 20 days ), or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F20+ ALIGN=MIDDLE  ALT=\"+1%2F20+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "What fraction of the project did they complete in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+ ALIGN=MIDDLE  ALT=\"+n+\"   DISABLED_style= \"max-width:90%; height:auto;\" > days?<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%281%2F20%29%2An+=+n%2F20+ ALIGN=MIDDLE  ALT=\"+%281%2F20%29%2An+=+n%2F20+\"   DISABLED_style= \"max-width:90%; height:auto;\" > of the project<BR>\n" );
document.write( "That means that the fraction of the project left to be done is<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1+-+n%2F20++ ALIGN=MIDDLE  ALT=\"+1+-+n%2F20++\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "Now there are <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+20+-+15+=+5+ ALIGN=MIDDLE  ALT=\"+20+-+15+=+5+\"   DISABLED_style= \"max-width:90%; height:auto;\" > men left to finish the project<BR>\n" );
document.write( "If 25 men work at a rate of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F20+ ALIGN=MIDDLE  ALT=\"+1%2F20+\"   DISABLED_style= \"max-width:90%; height:auto;\" >, then 5 men will be<BR>\n" );
document.write( "5 times slower, or a rate of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%281%2F5%29%2A%281%2F20%29+=+1%2F100+ ALIGN=MIDDLE  ALT=\"+%281%2F5%29%2A%281%2F20%29+=+1%2F100+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Now I can say<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F100+=+%28+1+-+n%2F20+%29+%2F+37.5+ ALIGN=MIDDLE  ALT=\"+1%2F100+=+%28+1+-+n%2F20+%29+%2F+37.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.375+=+1+-+n%2F20+ ALIGN=MIDDLE  ALT=\"+.375+=+1+-+n%2F20+\"   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=+20+ ALIGN=MIDDLE  ALT=\"+20+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+7.5+=+20+-+n+ ALIGN=MIDDLE  ALT=\"+7.5+=+20+-+n+\"   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+-+7.5+ ALIGN=MIDDLE  ALT=\"+n+=+20+-+7.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+=+12.5+ ALIGN=MIDDLE  ALT=\"+n+=+12.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The 15 men left after 12.5 days<BR>\n" );
document.write( "check answer:<BR>\n" );
document.write( "The original 25 men finished<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n%2F20+=+12.5%2F20+ ALIGN=MIDDLE  ALT=\"+n%2F20+=+12.5%2F20+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.625+ ALIGN=MIDDLE  ALT=\"+.625+\"   DISABLED_style= \"max-width:90%; height:auto;\" > as a fraction of the project<BR>\n" );
document.write( "There was <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1+-+.625+=+.375+ ALIGN=MIDDLE  ALT=\"+1+-+.625+=+.375+\"   DISABLED_style= \"max-width:90%; height:auto;\" > left to do<BR>\n" );
document.write( "The remaining 5 men work at a rate of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F100+ ALIGN=MIDDLE  ALT=\"+1%2F100+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F100+=+.375+%2F+37.5+ ALIGN=MIDDLE  ALT=\"+1%2F100+=+.375+%2F+37.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+37.5%2F100+=+.375+ ALIGN=MIDDLE  ALT=\"+37.5%2F100+=+.375+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );