document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=143134>Question 143134</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need help with this word problem, I don't know how to set up the system of linear equations.  Any help would be appreciated.  Thanks.\r<BR>\n" );
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document.write( "Walt made an extra $9000 last year from a part-time job. He invested part of the money at a 9% annual rate of interest, and the rest at an 8% annual rate of interest. At the end of the year, he made a total of $770 in interest. How much was invested at 8%? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #104135 by </B><A HREF=/tutors/aboutme.mpl?userid=oscargut><B>oscargut(2103)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=oscargut><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=oscargut><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=104135\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "You have to solve:\r<BR>\n" );
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document.write( "C1+C2=9000\r<BR>\n" );
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document.write( "0.09(C1)+0.08(C2)=770\r<BR>\n" );
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document.write( "And the value of C2 is the solution<BR>\n" );
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