document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=29092>Question 29092</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I'm having a brain cramp and can't figure out the formula.  I can figure it out if they both work together, but the 2 hours is goofing me up.\r<BR>\n" );
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document.write( "An expert can do a job in 6 hours.  An helper can do the same job in 7 hours.  If the expert works for 2 hours, how long does it take for the helper to finish? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #15938 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=15938\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The expert works at a rate of (1/6)job per hour.<BR>\n" );
document.write( "The helper finishs (2/7)job in two hours, leaving (5/7)of the job to be done.<BR>\n" );
document.write( "EQUATION:<BR>\n" );
document.write( "Let x be the number of hours the expert has to work to finish the job.<BR>\n" );
document.write( "Then (1/6)x=5/7<BR>\n" );
document.write( "x=30/7 hrs. = 4 2/7 hrs= 60min. + (2/7)60 min.= 4 hr. 17 minutes.<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "stan H. </SPAN>\n" );
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