document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=612855>Question 612855</A>: <I><SPAN STYLE=\"word-break: break-all;\"> IF JOSEPH CAN ENCODE ONE BOX FILE OF DATA WITHIN 4 HOURS, AND JOEL CAN ENCODE THE SAME VOLUME(1 BOX FILE) WITHIN 7 HOURS, HOW LONG CAN THEY FINISH 150 BOX FILES TOGETHER? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #385753 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=385753\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> IF JOSEPH CAN ENCODE ONE BOX FILE OF DATA WITHIN 4 HOURS, AND JOEL CAN ENCODE THE SAME VOLUME(1 BOX FILE) WITHIN 7 HOURS, HOW LONG CAN THEY FINISH 150 BOX FILES TOGETHER?<BR>\n" );
document.write( "---------<BR>\n" );
document.write( "Joseph rate: 1/4 box/hr<BR>\n" );
document.write( "Joel rate::  1/7 box/hr<BR>\n" );
document.write( "Together rate: 1/x box/hr<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "rate + rate = together rate<BR>\n" );
document.write( "1/4 + 1/7 = 1/x<BR>\n" );
document.write( "7x + 4x = 28<BR>\n" );
document.write( "11x = 28<BR>\n" );
document.write( "x = 28/11 boxes (# of hrs to complete one box together)<BR>\n" );
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document.write( "# of hrs to complete 150 boxes = 150/(28/11) = 150*11/28 = 58.93 hrs<BR>\n" );
document.write( "============================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );