document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=979975>Question 979975</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A farmer can plant 8 trees in 6 days. His friend can plant 6 trees in 9 days. Working together,<BR>\n" );
document.write( "how many trees can they plant in 15 days? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #601195 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39623)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=601195\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> RT=J uniform rate model relating RATE, TIME, Amount of JOB.\r<BR>\n" );
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document.write( "The two farmers are farmer A at rate A and farmer B at rate B.<BR>\n" );
document.write( "The rate model form can also be shown as <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=R=J%2FT ALIGN=MIDDLE  ALT=\"R=J%2FT\"   DISABLED_style= \"max-width:90%; height:auto;\" >, and we can then use<BR>\n" );
document.write( "this to assign <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=8%2F6=4%2F3 ALIGN=MIDDLE  ALT=\"A=8%2F6=4%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" >  and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=B=6%2F9=2%2F3 ALIGN=MIDDLE  ALT=\"B=6%2F9=2%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" >, both in units of TREES per DAY.\r<BR>\n" );
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document.write( "Their combined rate if working together on the same work is  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A%2BB ALIGN=MIDDLE  ALT=\"A%2BB\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "Question, how many trees j can A and B plant in t=15 days?  The unknown variable is j.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28A%2BB%29%2At=j ALIGN=MIDDLE  ALT=\"%28A%2BB%29%2At=j\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28j=%284%2F3%2B2%2F3%29%2A15%29 ALIGN=MIDDLE  ALT=\"highlight_green%28j=%284%2F3%2B2%2F3%29%2A15%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and you can do the arithmetic computation.<BR>\n" );
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