document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=869525>Question 869525</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A manager on the job recognizes that he needs a computer task accomplished within 3.5 hours. Through observation he chooses his best employee (employee 1), and 2 others to work together to accomplish this. He knows that employee 1 can complete the task in 9 hours working alone. While the others can complete the task in 12 hours and 13 hours, respectively, working alone. How long will it take the 3 employees working together to complete the computer task? Round your answer to 1 decimal place.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #524234 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39620)</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=524234\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> These are each employee's work rates, in JOBS per HOUR:<BR>\n" );
document.write( "Employee 1, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F9 ALIGN=MIDDLE  ALT=\"1%2F9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Employee 2, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F12 ALIGN=MIDDLE  ALT=\"1%2F12\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Employee 3, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F13 ALIGN=MIDDLE  ALT=\"1%2F13\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "The combined rate of the three employees working together is the sum of their individual rates.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F9%2B1%2F12%2B1%2F13 ALIGN=MIDDLE  ALT=\"1%2F9%2B1%2F12%2B1%2F13\"   DISABLED_style= \"max-width:90%; height:auto;\" >  jobs per hour; but you will want the reciprocal, which will be in hours per job.\r<BR>\n" );
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document.write( "The final meaning that you are looking for is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F%281%2F9%2B1%2F12%2B1%2F13%29 ALIGN=MIDDLE  ALT=\"1%2F%281%2F9%2B1%2F12%2B1%2F13%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > HOURS per JOB. </SPAN>\n" );
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