document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=157043>Question 157043</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Al makes $30 an hour. Bill makes $20 an hour. Bill joins Al on the job four hours after Al started. They finish the job, and the total cost for labor comes to $470. How many hours did each work? \r<BR>\n" );
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document.write( "By trial and error, I know that the number of hours is 11 for Al and 7 for Bill. I just need to show the work. \r<BR>\n" );
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document.write( "Al    - 11 hours @ $30/hour = 330<BR>\n" );
document.write( "Bill  -  7 hours @ $20/hour = 140<BR>\n" );
document.write( "                    Total =   470\r<BR>\n" );
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document.write( "Here is the equation that I came up with for figuring the number of hours each worked - where X=Al's hours and X-4 = Bill's hours. I'm fairly certain this equation is correct. \r<BR>\n" );
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document.write( "$470 = 30X + 20(x-4)\r<BR>\n" );
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document.write( "It's at this point that I get stuck. Any help would be greatly appreciated! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #115807 by </B><A HREF=/tutors/aboutme.mpl?userid=alan22153><B>alan22153(1)</B></A><img src=\"/images/stars/iconNewId_16x16.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=alan22153><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=115807\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 470= 30X+20(x-4)<BR>\n" );
document.write( "         20*x=20X, and <BR>\n" );
document.write( "         20*-4=-80<BR>\n" );
document.write( "470=30X+20X-80 or\r<BR>\n" );
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document.write( "add 80 to each side of the equation<BR>\n" );
document.write( "550=50X<BR>\n" );
document.write( "x=11  Al<BR>\n" );
document.write( "x-4= 7 Bill </SPAN>\n" );
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