document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=184018>Question 184018</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Trimming hedges.<BR>\n" );
document.write( "Lourdes can trim the hedges around her property in 8 hours by using an electric hedge trimmer.  Rafael can do the same job in 15 hours by using a manual trimmer.  How long would it take them to trim the hedges working together? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #138051 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=138051\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> To get the rate of hedge clipping with them working<BR>\n" );
document.write( "together, I add the rates of them each working alone<BR>\n" );
document.write( "In words:<BR>\n" );
document.write( "(1 trimming job)/(Lourde's time) + (1 trimming job)/(Rafael's time) =<BR>\n" );
document.write( "(1 trimming job)/(time working together)<BR>\n" );
document.write( "given:<BR>\n" );
document.write( "Lourde's time is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8 ALIGN=MIDDLE  ALT=\"8\"   DISABLED_style= \"max-width:90%; height:auto;\" > hrs<BR>\n" );
document.write( "Rafael's time is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=15 ALIGN=MIDDLE  ALT=\"15\"   DISABLED_style= \"max-width:90%; height:auto;\" > hrs<BR>\n" );
document.write( "----------------------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F8+%2B+1%2F15+=+1%2Ft ALIGN=MIDDLE  ALT=\"1%2F8+%2B+1%2F15+=+1%2Ft\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Multiply both sides by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=120 ALIGN=MIDDLE  ALT=\"120\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=15+%2B+8+=+120%2Ft ALIGN=MIDDLE  ALT=\"15+%2B+8+=+120%2Ft\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Multiply both sides by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t ALIGN=MIDDLE  ALT=\"t\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=15t+%2B+8t+=+120 ALIGN=MIDDLE  ALT=\"15t+%2B+8t+=+120\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=23t+=+120 ALIGN=MIDDLE  ALT=\"23t+=+120\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+5.22 ALIGN=MIDDLE  ALT=\"t+=+5.22\"   DISABLED_style= \"max-width:90%; height:auto;\" > hrs<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.22%2A60+=+13.2 ALIGN=MIDDLE  ALT=\".22%2A60+=+13.2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Working together, they finish in about 5 hrs and 13 min </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );