document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=777773>Question 777773</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A can do a piece of work in 12 days and B can do a piece of work in 18 days. They started working together but A left 3 days before the completion of the work. The total number of days to complete the work is ?? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #474255 by </B><A HREF=/tutors/aboutme.mpl?userid=dkppathak><B>dkppathak(439)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=dkppathak><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=dkppathak><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=474255\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A can do a piece of work in 12 days<BR>\n" );
document.write( "A one day work is =1/12<BR>\n" );
document.write( "B can do a piece of work in 18 days<BR>\n" );
document.write( "B one day work  is =1/18<BR>\n" );
document.write( "A and B both together work  for one day=  1/12+1/18<BR>\n" );
document.write( "                                       =5/36 part <BR>\n" );
document.write( "let total work completed in x days <BR>\n" );
document.write( "both work for (x-3) and B work alone  3 days \r<BR>\n" );
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document.write( "both work for (x-3) days =(x-3)5/36=5x-15/36<BR>\n" );
document.write( "B alone three days work =3x1/18=1/6\r<BR>\n" );
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document.write( "as per give conditions <BR>\n" );
document.write( "1/6+ 5x-15/36 =1<BR>\n" );
document.write( "by LCM  solving  we will get <BR>\n" );
document.write( "-9+5x/36=1<BR>\n" );
document.write( "-9+5x=36<BR>\n" );
document.write( "5x =45 <BR>\n" );
document.write( "x=45/5=9 days<BR>\n" );
document.write( "answer work completed in  9 days  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );