document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=400962>Question 400962</A>: <I><SPAN STYLE=\"word-break: break-all;\"> BJ can overhaul a boat's diesel inboard engine in 20 hours. His apprentice takes 60 hours to do the same job. How long would it take them working together assuming no gain or loss in efficiency?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #283748 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=283748\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> BJ can overhaul a boat's diesel inboard engine in 20 hours. His apprentice takes 60 hours to do the same job. How long would it take them working together assuming no gain or loss in efficiency?\r<BR>\n" );
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document.write( "BJ rate: 1/20 job/hr<BR>\n" );
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document.write( "App rate: 1/60 job/hr<BR>\n" );
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document.write( "Together rate: 1/x job/hr<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "rate + rate = together rate<BR>\n" );
document.write( "1/20 + 1/60 = 1/x<BR>\n" );
document.write( "Multiply thru by 60x<BR>\n" );
document.write( "3x + x = 60<BR>\n" );
document.write( "4x = 60<BR>\n" );
document.write( "x = 15 hrs (time to do the job together)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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