document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=880985>Question 880985</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A total of $22,000 is invested in 3 accounts earning 3%, 5%, and 7% annual interest.  The combined interest for one year is $1146.  If the amount invested at 7% is four times the amount at 5%, find the amount invested at 3%.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #531848 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=531848\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A total of $22,000 is invested in 3 accounts earning 3%, 5%, and 7% annual interest. The combined interest for one year is $1146. If the amount invested at 7% is four times the amount at 5%, find the amount invested at 3%.<BR>\n" );
document.write( "***<BR>\n" );
document.write( "let x=amt invested at 5%<BR>\n" );
document.write( "4x=amt invested at 7%<BR>\n" );
document.write( "22000-5x=amt invested at 3%<BR>\n" );
document.write( "..<BR>\n" );
document.write( ".05x+.07*4x+.03(22000-5x)=1146<BR>\n" );
document.write( ".05x+.28x+660-.15x=1146<BR>\n" );
document.write( ".18x=486<BR>\n" );
document.write( "x=486/.18<BR>\n" );
document.write( "x=2700<BR>\n" );
document.write( "amount invested at 3% = $2700 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );