document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=998506>Question 998506</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Machine A produces bolts at a uniform rate of 120 bolts every 40 seconds and machine B produces bolts at a uniform rate of 100 bolts every 20 seconds.  If the two machines are run simultaneously, how many seconds will it take for them to produce a total of 200 bolts? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #616294 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><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=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=616294\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Machine A ==>  120 bolts/40 sec = 3 bolts/sec<BR>\n" );
document.write( "Machine B ==>  100 bolts/20 sec = 5 bolts/sec<BR>\n" );
document.write( "So together they make 8 bolts/sec.<BR>\n" );
document.write( "To make 200 bolts, they will need<BR>\n" );
document.write( "200 bolts / (8 bots/sec) = 25 seconds  </SPAN>\n" );
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