document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=311642>Question 311642</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a total of $8000 is invested into two simple interest accounts. On one account the annual simple interest rate is 9%; on the second account the annual simple interest rate is 7% How much should be invested in the 7% account so that the total interest earned is 8.5% of the total investment? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #222928 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=222928\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a total of $8000 is invested into two simple interest accounts. On one account the annual simple interest rate is 9%; on the second account the annual simple interest rate is 7% How much should be invested in the 7% account so that the total interest earned is 8.5% of the total investment?<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Let $x be the investment in 7% account<BR>\n" );
document.write( "8000-x will be invested in 9%<BR>\n" );
document.write( "Total invested = $ 8000 <BR>\n" );
document.write( "you should get 8.5%<BR>\n" );
document.write( "..<BR>\n" );
document.write( "0.07x +0.09(8000-x)=8000*0.085<BR>\n" );
document.write( "0.07x+720-0.09x=680<BR>\n" );
document.write( "-0.02x=680-720<BR>\n" );
document.write( "x=-40/-0.02<BR>\n" );
document.write( "x= $2000 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );