document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=143128>Question 143128</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 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%? Any help would be appreciated. Thank you very, very much. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #104141 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=104141\">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=5000 is the amount invested @ 9%<BR>\n" );
document.write( "9000-5000=4000 is the amount 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" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );