document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=181040>Question 181040</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Walt made an extra $12,000 last year from a part-time job. He invested part of the money at 7% and the rest at 9%. He made a total of $970 in interest. How much was invested at 7%?\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #135722 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=135722\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .07x+.09(12,000-x)=970<BR>\n" );
document.write( ".07x+1080-.09x=970<BR>\n" );
document.write( "-.02x=970-1080<BR>\n" );
document.write( "-.02x=110<BR>\n" );
document.write( "x=-110/-.02<BR>\n" );
document.write( "x=5,500 amount invested @ 7%<BR>\n" );
document.write( "12,000-5,500=6,500 amount invested @ 9%<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( ".07*5,500+.09*6,500=970<BR>\n" );
document.write( "385+586=970<BR>\n" );
document.write( "970=970<BR>\n" );
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