document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=389207>Question 389207</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Copier A can make 300 photocopies of a page in 15 minutes.COpier B can do the same job in 12 minutes.If both copiers work together,how long will it take them to do the job? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #275745 by </B><A HREF=/tutors/aboutme.mpl?userid=Jk22><B>Jk22(389)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Jk22><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=Jk22><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=275745\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> It will take : 1/(1/12 + 1/15) = 3*4*5/(5+4) = 20/3 = 6 + 2/3 minutes or 6 minutes 40 seconds.<BR>\n" );
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document.write( "The reasoning can be done like this : the copy-speed of A is 300/15 pages/minutes<BR>\n" );
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document.write( "B is 300/12 pages/minute, if they work together, the total speed is 300/15+300/12=20+25=45 page minutes, so for the 300 pages, it will take : 300/45 = 6,666 minutes, or 6 2/3 minutes. </SPAN>\n" );
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