document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=684008>Question 684008</A>: <I><SPAN STYLE=\"word-break: break-all;\"> it takes jack 3.5 hours to complete a job and it takes 2 hours for eleanor to do the same job. How long would it take for them to complete the job 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 #423875 by </B><A HREF=/tutors/aboutme.mpl?userid=rapaljer><B>rapaljer(4671)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rapaljer><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=rapaljer><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=423875\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x = time it takes them to do the job together.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F3.5%2B1%2F2+=+1%2Fx ALIGN=MIDDLE  ALT=\"1%2F3.5%2B1%2F2+=+1%2Fx\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "First fraction is UGLY, so multiply numerator and denominator by 2 to clear the decimal:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2F7+%2B+1%2F2+=+1%2Fx ALIGN=MIDDLE  ALT=\"2%2F7+%2B+1%2F2+=+1%2Fx\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Next, add the fractions with LCD = 14:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4%2F14+%2B+7%2F14+=+1%2Fx ALIGN=MIDDLE  ALT=\"4%2F14+%2B+7%2F14+=+1%2Fx\"   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=11%2F14=1%2Fx ALIGN=MIDDLE  ALT=\"11%2F14=1%2Fx\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Invert the fractions:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=14%2F11+=+x%2F1 ALIGN=MIDDLE  ALT=\"14%2F11+=+x%2F1\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "x= 14/11 hours\r<BR>\n" );
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document.write( "Dr. Robert J. Rapalje, Retired<BR>\n" );
document.write( "Seminole State College of Florida\r<BR>\n" );
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document.write( "www.mathinlivingcolor.com.<BR>\n" );
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