document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=198745>Question 198745</A>: <I><SPAN STYLE=\"word-break: break-all;\"> One year ago Walt invested $12000. 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 do not know where to place what number in the formula equation<BR>\n" );
document.write( "ax2 + bx + c = 0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #149246 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley75><B>checkley75(3666)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley75><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=149246\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> ax2 + bx + c = 0<BR>\n" );
document.write( "This is not the correct formula for this type of problem.<BR>\n" );
document.write( ".09x+.07(12,000-x)=970 is the correct formula.<BR>\n" );
document.write( ".09x+840-.07x=970<BR>\n" );
document.write( ".02x=970-840<BR>\n" );
document.write( ".02x=130<BR>\n" );
document.write( "x=130/.02<BR>\n" );
document.write( "x=6,500 amount invested @ 9%.<BR>\n" );
document.write( "12,000-6,500=5,500 amount invested @ 7%.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( ".09*6,500+.07*5,500=970<BR>\n" );
document.write( "585+385=970<BR>\n" );
document.write( "970=970 </SPAN>\n" );
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