document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=889347>Question 889347</A>: <I><SPAN STYLE=\"word-break: break-all;\"> jim's copier can do a printing job in 7 hours. janet's copies can do the same job in 12 hours. how long would it take to do the job with both copies? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #538090 by </B><A HREF=/tutors/aboutme.mpl?userid=LinnW><B>LinnW(1048)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=LinnW><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=LinnW><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=538090\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Jims copier does 1/7 of a job per hour<BR>\n" );
document.write( "Janets does 1/12 per hour\r<BR>\n" );
document.write( "\n" );
document.write( "Set t = time to complete a job<BR>\n" );
document.write( "t(1/7) + t(1/12) = 1 job<BR>\n" );
document.write( "t(1/7 + 1/12) = 1<BR>\n" );
document.write( "use 7*12 as a common denominator<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%28+%28%2812%29%2F%2812%29%29%2A%281%2F7%29+%2B+%28%287%29%2F%287%29%29%2A%281%2F12%29+%29+=+1 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+%28+12%2F%2812%2A7%29+%2B+7%2F%2812%2A7%29+%29+=+1+ ALIGN=MIDDLE  ALT=\"t+%28+12%2F%2812%2A7%29+%2B+7%2F%2812%2A7%29+%29+=+1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+%28+19%2F84+%29+=+1+ ALIGN=MIDDLE  ALT=\"t+%28+19%2F84+%29+=+1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "multiply each side by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=84%2F19 ALIGN=MIDDLE  ALT=\"84%2F19\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "t = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=84%2F19 ALIGN=MIDDLE  ALT=\"84%2F19\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 4.421 hours </SPAN>\n" );
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