document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1025939>Question 1025939</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Peter can do a piece of work in 8 days, sam in 10 days and john in 16 days. Sam and john work together for 4 days and then john is replaced by peter. Find when the work will be finished. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #641208 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=641208\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Peter's rate:<BR>\n" );
document.write( "[ 1 job done ] / [ 8 days ]<BR>\n" );
document.write( "Sam's rate:<BR>\n" );
document.write( "[ 1 job done ] / [ 10 days ]<BR>\n" );
document.write( "John's rate:<BR>\n" );
document.write( "[ 1 job done ] / [ 16 days ]<BR>\n" );
document.write( "----------------------<BR>\n" );
document.write( "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;\" > = the fraction of the job that<BR>\n" );
document.write( "Sam and John get done in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4+ ALIGN=MIDDLE  ALT=\"+4+\"   DISABLED_style= \"max-width:90%; height:auto;\" > days<BR>\n" );
document.write( "---------<BR>\n" );
document.write( "Add their rates of working to get their<BR>\n" );
document.write( "rate working together<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F10+%2B+1%2F16+=+x%2F4+ ALIGN=MIDDLE  ALT=\"+1%2F10+%2B+1%2F16+=+x%2F4+\"   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=+2+ ALIGN=MIDDLE  ALT=\"+2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F5+%2B+1%2F8+=+x%2F2+ ALIGN=MIDDLE  ALT=\"+1%2F5+%2B+1%2F8+=+x%2F2+\"   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=+40+ ALIGN=MIDDLE  ALT=\"+40+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+8+%2B+5+=+20x+ ALIGN=MIDDLE  ALT=\"+8+%2B+5+=+20x+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+20x+=+13+ ALIGN=MIDDLE  ALT=\"+20x+=+13+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+13%2F20+ ALIGN=MIDDLE  ALT=\"+x+=+13%2F20+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "This is the fraction of the job Sam and John<BR>\n" );
document.write( "complete in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4+ ALIGN=MIDDLE  ALT=\"+4+\"   DISABLED_style= \"max-width:90%; height:auto;\" > days<BR>\n" );
document.write( "there is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1+-+13%2F20+=+7%2F20+ ALIGN=MIDDLE  ALT=\"+1+-+13%2F20+=+7%2F20+\"   DISABLED_style= \"max-width:90%; height:auto;\" > of the job left<BR>\n" );
document.write( "------------------------<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+ ALIGN=MIDDLE  ALT=\"+t+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = time in days for Peter and Sam to<BR>\n" );
document.write( "do <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+7%2F20+ ALIGN=MIDDLE  ALT=\"+7%2F20+\"   DISABLED_style= \"max-width:90%; height:auto;\" > of the job<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F8+%2B+1%2F10+=+%28+7%2F20+%29+%2F+t+ ALIGN=MIDDLE  ALT=\"+1%2F8+%2B+1%2F10+=+%28+7%2F20+%29+%2F+t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F8+%2B+1%2F10+=+7%2F20t+ ALIGN=MIDDLE  ALT=\"+1%2F8+%2B+1%2F10+=+7%2F20t+\"   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=+40t+ ALIGN=MIDDLE  ALT=\"+40t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+5t+%2B+4t+=+14+ ALIGN=MIDDLE  ALT=\"+5t+%2B+4t+=+14+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+9t+=+14+ ALIGN=MIDDLE  ALT=\"+9t+=+14+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+14%2F9+ ALIGN=MIDDLE  ALT=\"+t+=+14%2F9+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+1+%2B+5%2F9+ ALIGN=MIDDLE  ALT=\"+t+=+1+%2B+5%2F9+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "The job gets done in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4+%2B+1+%2B+5%2F9+ ALIGN=MIDDLE  ALT=\"+4+%2B+1+%2B+5%2F9+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "5 and 5/9 days<BR>\n" );
document.write( "Hope I got it -get a 2nd opinion, too. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );