document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=309438>Question 309438</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I got this equation so far for this problem but I am at a loss on how to solve it.  Here is the word problem:\r<BR>\n" );
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document.write( "Your business has the copy machine break down.  After having it repaired, you receive a bill for a total of $140 for 8 hours of work.  The bill is itemized to show that the full-time mechanic was paid $50 and the part-time mechanic was paid $90.  There was more than one thing wrong and you opted to have the easy thing fixed by the parttime mechanic who earns $10 less per hour than the full-time mechanic.  How many hours did each worker spend fixing the copier?<BR>\n" );
document.write( "My equation began with fulltime xt=50 and parttime (x-10)(8t)=90.\r<BR>\n" );
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document.write( "How do I solve this equation? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #221336 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=221336\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a+b=8<BR>\n" );
document.write( "a=8-b<BR>\n" );
document.write( "x*a+y*b=140<BR>\n" );
document.write( "a*x=90<BR>\n" );
document.write( "b*y=50<BR>\n" );
document.write( "y=50/b<BR>\n" );
document.write( "x=y-10<BR>\n" );
document.write( "x*a+y*b=140<BR>\n" );
document.write( "(50/b-10)(8-b)+50=140<BR>\n" );
document.write( "b=2<BR>\n" );
document.write( "b=20 <BR>\n" );
document.write( "a+20=8<BR>\n" );
document.write( "a=-12 discard<BR>\n" );
document.write( "b=20 discard<BR>\n" );
document.write( "a+2=8<BR>\n" );
document.write( "a=6<BR>\n" );
document.write( "a = 6,   b = 2,   x = 15,   y = 25<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );