document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=394130>Question 394130</A>: <I><SPAN STYLE=\"word-break: break-all;\"> one machine can complete a job in 10minutes. if the same jobis done byh thismachine and an older machine working together, the job can be completed in 6 minutes. how long would it take the older machine to do the job alone?<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 #279633 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=279633\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> one machine can complete a job in 10minutes. if the same jobis done byh thismachine and an older machine working together, the job can be completed in 6 minutes. how long would it take the older machine to do the job alone?<BR>\n" );
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document.write( "Machine A 6 minutes<BR>\n" );
document.write( "1/6 of job in1 minute<BR>\n" );
document.write( "..<BR>\n" );
document.write( "Machine B + machine A = 6 minutes<BR>\n" );
document.write( "they do 1/6 of the job in 1 minute<BR>\n" );
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document.write( "Job done by B in 1 minute =<BR>\n" );
document.write( "1/6 -1/10<BR>\n" );
document.write( "=(10-6)/60<BR>\n" );
document.write( "=4/60<BR>\n" );
document.write( "=1/15<BR>\n" );
document.write( "...<BR>\n" );
document.write( "so Machine B will take 15 minutes to do the same job </SPAN>\n" );
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