document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=265423>Question 265423</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An investment with interest compounded continuously doubled itself in 16yr. What is the interest rate?\r<BR>\n" );
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document.write( "I don't know how to start this problem? I know it will be 2x*16? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #195183 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=195183\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An investment with interest compounded continuously doubled itself in 16yr. What is the interest rate? <BR>\n" );
document.write( "I don't know how to start this problem? I know it will be 2x*16?<BR>\n" );
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document.write( "FV = PV*e^rt for continuous compounding<BR>\n" );
document.write( "Future Value = 2 x Present Value, so<BR>\n" );
document.write( "2 = e^rt<BR>\n" );
document.write( "2 = e^16r<BR>\n" );
document.write( "16r = ln(2)<BR>\n" );
document.write( "r = ln(2)/16<BR>\n" );
document.write( "r =~ 4.33217% per year </SPAN>\n" );
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