document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1172615>Question 1172615</A>: <I><SPAN STYLE=\"word-break: break-all;\"> You have  $30,000 to  invest  in two  stock  funds.    The  first  fund  pays  5% annual  interest  and  the  second  pays 8%  annual  interest.    If  after  a  year  you have made $2,100 interest.  How much money did you invest in each account?  <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #797711 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13200)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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/cgi-bin/show-face.mpl?user=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=797711\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "Here is a quick and easy way to solve \"mixture\" problems like this, if a formal algebraic solution is not required.<br><BR>\n" );
document.write( "(1) $2100 interest on an investment of $30,000 is a return of 7%.<BR>\n" );
document.write( "(2) 7% is 2/3 of the way from 5% to 8%. (view the three percentages on a number line, if it helps....)<BR>\n" );
document.write( "(3) Therefore, 2/3 of the total investment was at the higher rate.<br><BR>\n" );
document.write( "ANSWER: 2/3 of $30,000, or $20,000, was invested at 8%; the other $10,000 at 5%.<br><BR>\n" );
document.write( "CHECK: .08(20,000)+.05(10,000) = 1600+500 = 2100<br><BR>\n" );
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