document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=221964>Question 221964</A>: <I><SPAN STYLE=\"word-break: break-all;\"> part of $12,000 investment earned interest at a rate of 7% and the rest earned interest at a rate of 9%. the combined interest earned at the end of 1 year was $890. how much was invested at each rate? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #166337 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=166337\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .09x+.07(12,000-x)=890<BR>\n" );
document.write( ".09x+840-.07x=890<BR>\n" );
document.write( ".02x=890-840<BR>\n" );
document.write( ".02x=50<BR>\n" );
document.write( "x=50/.02<BR>\n" );
document.write( "x=2,500 amount invested @ 9%.<BR>\n" );
document.write( "12,000-2,500=9,500 invested @ 7%.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( ".09*2,500+.07*9,500=890<BR>\n" );
document.write( "225+665=890<BR>\n" );
document.write( "890=890 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );