document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=315857>Question 315857</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Jack usually mows his lawn in 5 hours. Marilyn can mow the same yard in 4 hours. How much time would it take for them to mow together? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #225971 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=225971\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> jack takes 5 hours<BR>\n" );
document.write( "Marilyn - 4 hours<BR>\n" );
document.write( "jack does 1/5 of job in 1 hour<BR>\n" );
document.write( "Marilyn does 1/4 of job in 1 hour.<BR>\n" );
document.write( "to gether they do 1/4 +1/5 of the job in 1 hour.<BR>\n" );
document.write( "1/4 +1/5 = 9/20 of the job in 1 hour<BR>\n" );
document.write( "together they will do the job in 20 /9 hours<BR>\n" );
document.write( "= 2.2 hours </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );