document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=416346>Question 416346</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The OfficeJet printer can copy Lisa's dissertation in 8 minutes. The LaserJet printer can copy the same document in 10 minutes. If the two machines work together, how long would they take to copy the dissertation?\r<BR>\n" );
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document.write( "Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #291701 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=291701\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Add their rates of copying<BR>\n" );
document.write( "In words:<BR>\n" );
document.write( "( 1 copy / 8 min ) + (1 copy / 10 min) = (1 copy / x min )<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F8+%2B+1%2F10+=+1%2Fx+ ALIGN=MIDDLE  ALT=\"+1%2F8+%2B+1%2F10+=+1%2Fx+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Multiply both sides by the LCD, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=40x ALIGN=MIDDLE  ALT=\"40x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5x+%2B+4x+=+40 ALIGN=MIDDLE  ALT=\"5x+%2B+4x+=+40\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9x+=+40 ALIGN=MIDDLE  ALT=\"9x+=+40\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+40%2F9 ALIGN=MIDDLE  ALT=\"x+=+40%2F9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+4.444 ALIGN=MIDDLE  ALT=\"x+=+4.444\"   DISABLED_style= \"max-width:90%; height:auto;\" > min <BR>\n" );
document.write( "or about 4 min 27 sec<BR>\n" );
document.write( "check answer:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F8+%2B+1%2F10++=+1%2F%2840%2F9%29 ALIGN=MIDDLE  ALT=\"1%2F8+%2B+1%2F10++=+1%2F%2840%2F9%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.125+%2B+.1+=+9%2F40 ALIGN=MIDDLE  ALT=\".125+%2B+.1+=+9%2F40\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.225+=+.225 ALIGN=MIDDLE  ALT=\".225+=+.225\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );