document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=932174>Question 932174</A>: <I><SPAN STYLE=\"word-break: break-all;\"> bj can overhaul a boat's engine in 30 hours. his apprentice takes 60 hours to do the same job. how long would it take them to work together assuming no gain or loss in effeincy<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 #566022 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=566022\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1/a+1/b=1/x<BR>\n" );
document.write( "1/30+1/60=1/x<BR>\n" );
document.write( "60/1800+30/1800=1/x<BR>\n" );
document.write( "90/1800=1/x<BR>\n" );
document.write( "x=1800/90<BR>\n" );
document.write( "x=20 hours working together<BR>\n" );
document.write( "check<BR>\n" );
document.write( "x/a+x/b=1<BR>\n" );
document.write( "x/30+x/60=1<BR>\n" );
document.write( "20/30+20/60=1<BR>\n" );
document.write( "0.66666667+0.33333333=1<BR>\n" );
document.write( "1=1<BR>\n" );
document.write( "ok<BR>\n" );
document.write( "codewt<BR>\n" );
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