document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1129774>Question 1129774</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Machine X can do a certain job in four hours and machine Y can do the same job in six hours if machines X, Y, and Z do the job in two hours working together, how long would it take Z to do the job alone? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #746393 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39626)</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=746393\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> z, time for machine Z to do one job working alone, in hours\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F4%2B1%2F6%2B1%2Fz=1%2F2 ALIGN=MIDDLE  ALT=\"1%2F4%2B1%2F6%2B1%2Fz=1%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" >--------solve this for z.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( ".\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( ".\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2Fz=1%2F12 ALIGN=MIDDLE  ALT=\"1%2Fz=1%2F12\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28z=12%29 ALIGN=MIDDLE  ALT=\"highlight%28z=12%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );