document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=37114>Question 37114</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve and show all work please.\r<BR>\n" );
document.write( "\n" );
document.write( "Jane can mow the lawn in 3 hours, and Lester can mow it in 4 hours. If they work together, how long will it take them to mow the lawn? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #22800 by </B><A HREF=/tutors/aboutme.mpl?userid=longjonsilver><B>longjonsilver(2297)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=longjonsilver><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=longjonsilver><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=22800\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> if you think about things like this as speed = quantity/time: here the quantity is the lawn area mowed. Lets call this A for area.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "So, Jane: Jane's speed = A/3<BR>\n" );
document.write( "and Lester: Lester's speed = A/4\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "together we have still the same Area of lawn in some time, t:<BR>\n" );
document.write( "Jane + Lester speed = A/t<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+A%2F3+%2B+A%2F4+=+A%2Ft+ ALIGN=MIDDLE  ALT=\"+A%2F3+%2B+A%2F4+=+A%2Ft+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "all terms have an A, co we can cancel:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F3+%2B+1%2F4+=+1%2Ft+ ALIGN=MIDDLE  ALT=\"+1%2F3+%2B+1%2F4+=+1%2Ft+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2Ft+=+4%2F12+%2B+3%2F12+ ALIGN=MIDDLE  ALT=\"+1%2Ft+=+4%2F12+%2B+3%2F12+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2Ft+=+7%2F12+ ALIGN=MIDDLE  ALT=\"+1%2Ft+=+7%2F12+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+12%2F7+ ALIGN=MIDDLE  ALT=\"+t+=+12%2F7+\"   DISABLED_style= \"max-width:90%; height:auto;\" > hours\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "which is nearly 2 hours. This makes sense --> together it would take an even quicker time.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "jon.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );