document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=908940>Question 908940</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An experienced bricklayer can work twice as fast as an apprentice bricklayer. After they worked together on a job for 4 h, the experienced bricklayer quit. The apprentice required 12 more hours to finish the job. How long would it take the experienced bricklayer, working alone, to do the job? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #551418 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=551418\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2R+ ALIGN=MIDDLE  ALT=\"+2R+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = the experienced <BR>\n" );
document.write( "bricklayer's rate of working<BR>\n" );
document.write( "----------------------------<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+R+ ALIGN=MIDDLE  ALT=\"+R+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = the apprentice <BR>\n" );
document.write( "bricklayer's rate of working<BR>\n" );
document.write( "---------------------------<BR>\n" );
document.write( "I can say:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4%2A%28+R+%2B+2R+%29+ ALIGN=MIDDLE  ALT=\"+4%2A%28+R+%2B+2R+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = fraction of the job<BR>\n" );
document.write( "they completed working together<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1+-+4%2A%28+R+%2B+2R+%29+ ALIGN=MIDDLE  ALT=\"+1+-+4%2A%28+R+%2B+2R+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >  = fraction of the job<BR>\n" );
document.write( "left to finish<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "Now I can say:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+R+=+%28+1+-+4%2A%28+R+%2B+2R+%29+%29+%2F+12+ ALIGN=MIDDLE  ALT=\"+R+=+%28+1+-+4%2A%28+R+%2B+2R+%29+%29+%2F+12+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+12R+=+1+-+12R+ ALIGN=MIDDLE  ALT=\"+12R+=+1+-+12R+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+24R+=+1+ ALIGN=MIDDLE  ALT=\"+24R+=+1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+R+=+1%2F24+ ALIGN=MIDDLE  ALT=\"+R+=+1%2F24+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( " <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2R+=+2%2F24+ ALIGN=MIDDLE  ALT=\"+2R+=+2%2F24+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2R+=+1%2F12+ ALIGN=MIDDLE  ALT=\"+2R+=+1%2F12+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The experienced bricklayer would <BR>\n" );
document.write( "take 12 hrs to do the job working alone<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4%2A%28+R+%2B+2R+%29+ ALIGN=MIDDLE  ALT=\"+4%2A%28+R+%2B+2R+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = fraction of the job<BR>\n" );
document.write( "they completed working together<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4%2A%28+1%2F24+%2B+2%2F24+%29+=+4%2A%28+1%2F8+%29+ ALIGN=MIDDLE  ALT=\"+4%2A%28+1%2F24+%2B+2%2F24+%29+=+4%2A%28+1%2F8+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4%2A%281%2F8%29+=+1%2F2+ ALIGN=MIDDLE  ALT=\"+4%2A%281%2F8%29+=+1%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "There is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F2+ ALIGN=MIDDLE  ALT=\"+1%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" > left<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+R+=+%28+1+-+4%2A%28+R+%2B+2R+%29+%29+%2F+12+ ALIGN=MIDDLE  ALT=\"+R+=+%28+1+-+4%2A%28+R+%2B+2R+%29+%29+%2F+12+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+R+=+%281%2F2+%29+%2F+12+ ALIGN=MIDDLE  ALT=\"+R+=+%281%2F2+%29+%2F+12+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+R+=+1%2F24+ ALIGN=MIDDLE  ALT=\"+R+=+1%2F24+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );