document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=231488>Question 231488</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A new printer can run off 1,500 workbooks in 8 hours, while an older printer takes 12 hours to run the same load. If both run at the same time to finish 1,500 workbooks, how many hours would it take. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #171302 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=171302\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A new printer can run off 1,500 workbooks in 8 hours, while an older printer takes 12 hours to run the same load. If both run at the same time to finish 1,500 workbooks, how many hours would it take.<BR>\n" );
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document.write( "Call 1500 the job.<BR>\n" );
document.write( "The new printer does 1/8 of the job per hour.<BR>\n" );
document.write( "The old one does 1/12 of the job per hour.<BR>\n" );
document.write( "Together they do 1/8 + 1/12 per hour = 3/24 + 2/24<BR>\n" );
document.write( "= 5/24 job per hour.<BR>\n" );
document.write( "--> 24/5 hours to to the job<BR>\n" );
document.write( "= 4.8 hours<BR>\n" );
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document.write( "There's a shortcut:  product over sum<BR>\n" );
document.write( "= 12*8/(12+8) = 96/20<BR>\n" );
document.write( "= 4.8 hours<BR>\n" );
document.write( " </SPAN>\n" );
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