document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1149972>Question 1149972</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A construction firm has two tractors T one , and T two. both tractors working together can complete a piece of work in 6 days, while T one  alone can complete the work in 15 days. after the two tractors had worked together for 4 days, tractor T one  broke down. find the time taken by tractor T two  to complete the remaining work </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #771328 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</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=771328\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> RATES OF WORK<BR>\n" );
document.write( "T_one, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F15 ALIGN=MIDDLE  ALT=\"1%2F15\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "T_two, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2Fw ALIGN=MIDDLE  ALT=\"1%2Fw\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "T_combined, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F6 ALIGN=MIDDLE  ALT=\"1%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "x, unknown time for T_one to finish<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%281%2F6%29%2A4%2B%281%2Fw%29%2Ax=1 ALIGN=MIDDLE  ALT=\"%281%2F6%29%2A4%2B%281%2Fw%29%2Ax=1\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Use the rates to solve for w.<BR>\n" );
document.write( "Substitute in the \"to finish\" equation and simplify and solve for x. </SPAN>\n" );
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