document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=344643>Question 344643</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If Ben invests $4000 at 3% interest per year, how much additional money must he invest at 4.5% annual interest to ensure that the interest he receives each year is 3.5% of the total amount invested?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #246582 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=246582\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> $4000 @ 3 % Interest = $120<BR>\n" );
document.write( "..<BR>\n" );
document.write( "Let him invest $ x @ 4.5%<BR>\n" );
document.write( "interest he will get on this amount = x*0.045*1<BR>\n" );
document.write( "=0.045x<BR>\n" );
document.write( "..<BR>\n" );
document.write( "Total interest will be 120 + 0.045x.............1<BR>\n" );
document.write( "....<BR>\n" );
document.write( "Total amount invested = 4000+x<BR>\n" );
document.write( "interested desired = 3.5%<BR>\n" );
document.write( "= 0.035*(4000+x ) ........................2<BR>\n" );
document.write( "...<BR>\n" );
document.write( "equate 1 &2 <BR>\n" );
document.write( "120+0.045x =0.035(4000+x)<BR>\n" );
document.write( "120+0.045x=140+0.035x<BR>\n" );
document.write( "0.045x-0.035x=140-120<BR>\n" );
document.write( "0.01x= 20<BR>\n" );
document.write( "/0.01<BR>\n" );
document.write( "x=20/0.01<BR>\n" );
document.write( "x= $2000 . investment @ 4.5% </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );