document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=545735>Question 545735</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find out how long it takes a $2500 investment to double if it is invested at 9% compounded semiannually. round to the nearest tenth of a year. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #355762 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=355762\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Principal P =	2500							<BR>\n" );
document.write( "Amount=	5000							<BR>\n" );
document.write( "years=n								<BR>\n" );
document.write( "compounded (t)	2							<BR>\n" );
document.write( "Rate =	9				0.05			<BR>\n" );
document.write( "Amount =	P*((n+r)/n)^n							<BR>\n" );
document.write( "								<BR>\n" );
document.write( "5000	=	2500	*(	1	+	0.05	)^	n*t<BR>\n" );
document.write( "2	=	*(	1	+	0.05	)^	n*	2<BR>\n" );
document.write( "ln	2	=	2	n *ln	1.05			<BR>\n" );
document.write( "	0.69	=	2	0.04	*n			<BR>\n" );
document.write( "	7.87	=	n					<BR>\n" );
document.write( "m.ananth@hotmail.ca </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );