document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=340940>Question 340940</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi story problems are not favorite and seem to get confused with them. Can you please help me with this one.\r<BR>\n" );
document.write( "\n" );
document.write( "Jack usually mows his lawn in 3 hours. Marilyn can mow the same yard in 7 hours, how much time would it take for them to mow the lawn together?\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Thanks :o) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #244192 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=244192\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Jack usually mows his lawn in 3 hours. Marilyn can mow the same yard in 7 hours, how much time would it take for them to mow the lawn together? <BR>\n" );
document.write( ".<BR>\n" );
document.write( "Let x = hous it takes for both to mow lawn<BR>\n" );
document.write( "then<BR>\n" );
document.write( "x(1/3 + 1/7) = 1<BR>\n" );
document.write( "Multiplying both sides by 21:<BR>\n" );
document.write( "x(7 + 3) = 21<BR>\n" );
document.write( "x(10) = 21<BR>\n" );
document.write( "x = 2.1 hours<BR>\n" );
document.write( "or<BR>\n" );
document.write( "x = 2 hours and 6 minutes </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );