document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=627012>Question 627012</A>: <I><SPAN STYLE=\"word-break: break-all;\"> It takes Jake 11 hours to proof read a chapter and Mandy 9 hours to proof read a chapter. How long would it take them working together?       (Round you answer to two decimals). </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #394652 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=394652\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> It takes Jake 11 hours to proof read a chapter<BR>\n" );
document.write( " and Mandy 9 hours to proof read a chapter.<BR>\n" );
document.write( " How long would it take them working together?<BR>\n" );
document.write( " (Round you answer to two decimals).<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Let t = time required when working together<BR>\n" );
document.write( "Let the completed job = 1<BR>\n" );
document.write( ":<BR>\n" );
document.write( "A typical shared work equation<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%2F11 ALIGN=MIDDLE  ALT=\"t%2F11\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%2F9 ALIGN=MIDDLE  ALT=\"t%2F9\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 1<BR>\n" );
document.write( "multiply by 99,  to clear the denominators<BR>\n" );
document.write( "99*<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%2F11 ALIGN=MIDDLE  ALT=\"t%2F11\"   DISABLED_style= \"max-width:90%; height:auto;\" > + 99*<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%2F9 ALIGN=MIDDLE  ALT=\"t%2F9\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 99<BR>\n" );
document.write( "cancel the denominators<BR>\n" );
document.write( "9t + 11t = 99<BR>\n" );
document.write( "20t = 99<BR>\n" );
document.write( "t = 99/20<BR>\n" );
document.write( "t = 4.95 hr together </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );