document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1171222>Question 1171222</A>: <I><SPAN STYLE=\"word-break: break-all;\"> one machine can complease a job in 10 minutes if the same job is done by this machine and an older machine working together the two job can be completed in 6 minutes. how long<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 #796166 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13203)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=796166\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "If a formal algebraic solution is not required....<br><BR>\n" );
document.write( "The newer machine can do the job alone in 10 minutes.<br><BR>\n" );
document.write( "So when the two machines together do the job in 6 minutes, the newer machine does 6/10 = 3/5 of the job.<br><BR>\n" );
document.write( "That means in those 6 minutes the older machine does 2/5 of the job.<br><BR>\n" );
document.write( "2/5 of the job in 6 minutes means the older machine can do the whole job alone in (5/2)*6 = 15 minutes.<br><BR>\n" );
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