document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=596105>Question 596105</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 10 Men begin to work together on a job, but after some days, 4 of them left the job. As a<BR>\n" );
document.write( "result the job which could have been completed in 40 days is completed in 50 days. How<BR>\n" );
document.write( "many days after the commencement of the work did the 4 men leave?<BR>\n" );
document.write( "(a) 25 (b) 30 (c) 10 (d) 15 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #377556 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=377556\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This says that 10 men could have done the job<BR>\n" );
document.write( "in 40 days.<BR>\n" );
document.write( "1 man would have taken 10 times as long, so<BR>\n" );
document.write( "1 man does the job in 400 days<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 days after start when 4 men leave job<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+50+-+n+ ALIGN=MIDDLE  ALT=\"+50+-+n+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = number of days after 4 men leave<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "In general, ( rate of working for 1 man ) x ( number of men ) x ( number of days ) = part of job completed<BR>\n" );
document.write( "( 1 job / 400 days ) x ( 10 men ) x ( n days ) = part of job completed<BR>\n" );
document.write( "( 1 job / 400 days ) x ( 6 men ) x ( 50 - n days ) = part of job completed<BR>\n" );
document.write( "The 2 parts add up to 1 job completed<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+1%2F400+%29%2A10n+%2B+%28+1%2F400+%29%2A6%2A%28+50+-+n+%29+=+1+ ALIGN=MIDDLE  ALT=\"+%28+1%2F400+%29%2A10n+%2B+%28+1%2F400+%29%2A6%2A%28+50+-+n+%29+=+1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+1%2F400+%29%2A%28+10n+%2B+300+-+6n+%29+=+1+ ALIGN=MIDDLE  ALT=\"+%28+1%2F400+%29%2A%28+10n+%2B+300+-+6n+%29+=+1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4n+%2B+300+=+400+ ALIGN=MIDDLE  ALT=\"+4n+%2B+300+=+400+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4n+=+100+ ALIGN=MIDDLE  ALT=\"+4n+=+100+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+=+25+ ALIGN=MIDDLE  ALT=\"+n+=+25+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+50+-+n+=+50+-+25+ ALIGN=MIDDLE  ALT=\"+50+-+n+=+50+-+25+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+50+-+n+=+25+ ALIGN=MIDDLE  ALT=\"+50+-+n+=+25+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The 4 men left 25 days after the work started<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+1%2F400+%29%2A10n+%2B+%28+1%2F400+%29%2A6%2A%28+50+-+n+%29+=+1+ ALIGN=MIDDLE  ALT=\"+%28+1%2F400+%29%2A10n+%2B+%28+1%2F400+%29%2A6%2A%28+50+-+n+%29+=+1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+1%2F400+%29%2A10%2A25+%2B+%28+1%2F400+%29%2A6%2A%28+50+-+25+%29+=+1+ ALIGN=MIDDLE  ALT=\"+%28+1%2F400+%29%2A10%2A25+%2B+%28+1%2F400+%29%2A6%2A%28+50+-+25+%29+=+1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+250%2F400+%2B+%28+6%2A25+%29+%2F+400+=+1+ ALIGN=MIDDLE  ALT=\"+250%2F400+%2B+%28+6%2A25+%29+%2F+400+=+1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+250+%2B+150+=+400+ ALIGN=MIDDLE  ALT=\"+250+%2B+150+=+400+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+400+=+400+ ALIGN=MIDDLE  ALT=\"+400+=+400+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );