document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=136426>Question 136426</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If A can do a job in 5 hrs. and B can do a job in 8 hrs. Together they can do a job in_ hrs. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #99940 by </B><A HREF=/tutors/aboutme.mpl?userid=ptaylor><B>ptaylor(2198)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ptaylor><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=ptaylor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=99940\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x=amount of time it takes A&B to do the job working together<BR>\n" );
document.write( "A works at the rate of 1/5 of the job per hour<BR>\n" );
document.write( "B works at the rate of 1/8 of the job per hour\r<BR>\n" );
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document.write( "Together A & B works at the rate of 1/5+1/8 (LCM is 40)<BR>\n" );
document.write( "=8/40 + 5/40=13/40 of the job per hour, so our equation to solve is:\r<BR>\n" );
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document.write( "(13/40)x=1 (1 job, that is) multiply each side by 40\r<BR>\n" );
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document.write( "13x=40 divide each side by 13\r<BR>\n" );
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document.write( "x=3.0769 hours-----------------------time it takes A&B to do the job working together\r<BR>\n" );
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document.write( "Hope this helps---ptaylor </SPAN>\n" );
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