document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=115899>Question 115899</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Trudy Waterbury, a financial planner, invested a certain amount of money at 9% annual simple interest, twice that amount at 10% annual simple interest, and three times that amount at 11% annual simple interest.  Find the amount invested at each rate if her total yearly income from the investments was $2790. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #84365 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley71><B>checkley71(8403)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley71><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=84365\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .09x+.10*2x+.11*3x=2790<BR>\n" );
document.write( ".09x+.20x+.33x=2790<BR>\n" );
document.write( ".62x=2790<BR>\n" );
document.write( "x=2790/.62<BR>\n" );
document.write( "x=$4,500 invested @ 9%<BR>\n" );
document.write( "2*4,500=9000 invested @ 10%<BR>\n" );
document.write( "3*4500=13500 invested @ 11%<BR>\n" );
document.write( "proof<BR>\n" );
document.write( ".09*4500+.1*9000+.11*13500=2790<BR>\n" );
document.write( "405+900+1485=2790<BR>\n" );
document.write( "2790=2790<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );