document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=221213>Question 221213</A>: <I><SPAN STYLE=\"word-break: break-all;\"> There are two machines that produce aluminum cans. The newer machine can produce7200  cans in 200 minutes. It takes the older machine 300  minutes to produce that many cans. If the two machines work together, how long will it take them to produce 7200 cans? <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 #165992 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=165992\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Add the rates of producing cans for each machine<BR>\n" );
document.write( "to get the rate for both machines working together<BR>\n" );
document.write( "Let the time for both machines woking together<BR>\n" );
document.write( "to make <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7200 ALIGN=MIDDLE  ALT=\"7200\"   DISABLED_style= \"max-width:90%; height:auto;\" > cans  = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x ALIGN=MIDDLE  ALT=\"x\"   DISABLED_style= \"max-width:90%; height:auto;\" > min<BR>\n" );
document.write( "given:<BR>\n" );
document.write( "Rate of newer machine = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7200%2F200 ALIGN=MIDDLE  ALT=\"7200%2F200\"   DISABLED_style= \"max-width:90%; height:auto;\" > cans/min<BR>\n" );
document.write( "Rate of older machine = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7200%2F300 ALIGN=MIDDLE  ALT=\"7200%2F300\"   DISABLED_style= \"max-width:90%; height:auto;\" > cans/min<BR>\n" );
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document.write( "I can write the equation as<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7200%2F200+%2B+7200%2F300+=+7200%2Fx ALIGN=MIDDLE  ALT=\"7200%2F200+%2B+7200%2F300+=+7200%2Fx\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Divide both sides by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7200 ALIGN=MIDDLE  ALT=\"7200\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F200+%2B+1%2F300+=+1%2Fx ALIGN=MIDDLE  ALT=\"1%2F200+%2B+1%2F300+=+1%2Fx\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Multiply both sides by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=600x ALIGN=MIDDLE  ALT=\"600x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x+%2B+2x+=+600 ALIGN=MIDDLE  ALT=\"3x+%2B+2x+=+600\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5x+=+600 ALIGN=MIDDLE  ALT=\"5x+=+600\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+120 ALIGN=MIDDLE  ALT=\"x+=+120\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Working together, it takes them 120 minutes to make 7200 cans\r<BR>\n" );
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