document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=164622>Question 164622</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Applications of Linear Equations\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 9% and the rest at 8%. 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 #121382 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=121382\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .09x+.08(9000-x)=770<BR>\n" );
document.write( ".09x+720-.08x=770<BR>\n" );
document.write( ".01x=770-720<BR>\n" );
document.write( ".01x=50<BR>\n" );
document.write( "x=50/.01<BR>\n" );
document.write( "x=$5,000 Invested @ 9%.<BR>\n" );
document.write( "9000-5000=$4,000 invested @ 8%<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( ".09*5000+.08*4000=770<BR>\n" );
document.write( "450+320=770<BR>\n" );
document.write( "770=770<BR>\n" );
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