document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=859663>Question 859663</A>: <I><SPAN STYLE=\"word-break: break-all;\"> It takes Fred 8 hours to prepare the stadium field for a football game. He earns $10/hour. It takes Sam 12 hours to do the same job and he gets paid $7/hour.<BR>\n" );
document.write( "a. How long would it take to prepare the stadium if Fred and Sam worked together?<BR>\n" );
document.write( "b. What is the “cheapest” way to prepare the field: to hire Fred? to hire Sam? to have them both work together? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #517885 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39618)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=517885\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> To quickly get to combined work rate, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F8%2B1%2F12=5%2F24 ALIGN=MIDDLE  ALT=\"1%2F8%2B1%2F12=5%2F24\"   DISABLED_style= \"max-width:90%; height:auto;\" >  jobs per hour.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Looking at jobs per dollar,<BR>\n" );
document.write( "Fred:  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F%288%2A10%29=1%2F80 ALIGN=MIDDLE  ALT=\"1%2F%288%2A10%29=1%2F80\"   DISABLED_style= \"max-width:90%; height:auto;\" > jobs per dollar<BR>\n" );
document.write( "Sam:  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F%2812%2A7%29=1%2F84 ALIGN=MIDDLE  ALT=\"1%2F%2812%2A7%29=1%2F84\"   DISABLED_style= \"max-width:90%; height:auto;\" > jobs per dollar.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "BEST COST FOR THE JOB:<BR>\n" );
document.write( "To be very simple about finding an answer, not necessarily the perfect best, both of Fred and Sam together  work 24 hours for 5 jobs, so <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=24%2A10%2B24%2A7=608 ALIGN=MIDDLE  ALT=\"24%2A10%2B24%2A7=608\"   DISABLED_style= \"max-width:90%; height:auto;\" > dollars; but that is for FIVE jobs.  For ONE job, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=608%2F5=highlight%2813.60%29 ALIGN=MIDDLE  ALT=\"608%2F5=highlight%2813.60%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > dollars.  That is much better than 80 dollars for Fred alone or 84 dollars for Sam alone.   </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );