document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=249034>Question 249034</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Jack usually mows his lawn in 4 hrs. Marilyn can mow the same lawn in 7 hrs. How much time would it take for them to mow the lawn together?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #181440 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=181440\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Jack can do 1/4 the job in 1 hr.<BR>\n" );
document.write( "Marilyn can do 1/7 the job in 1 hr.<BR>\n" );
document.write( "1/4 + 1/7<BR>\n" );
document.write( "= 7/28 + 4/28<BR>\n" );
document.write( "= 11/28 of the job in 1 hr or 28/11 hrs for both of them to mow the lawn.<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Ed </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );