document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=598432>Question 598432</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how long will it take money to triple invested at 7.8% compounded weekly </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #378590 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=378590\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> how long will it take money to triple invested at 7.8% compounded weekly<BR>\n" );
document.write( "**<BR>\n" );
document.write( "compound  interest formula: <BR>\n" );
document.write( "A=P(1+r)^t, P=initial investment, r=interest rate per period, t=number of periods, A=amount after t periods.<BR>\n" );
document.write( "..<BR>\n" );
document.write( "For given problem:<BR>\n" );
document.write( "A/P=3<BR>\n" );
document.write( "r=.078/52=.0015<BR>\n" );
document.write( "t=number of weeks<BR>\n" );
document.write( "..<BR>\n" );
document.write( "A=P(1+r)^t<BR>\n" );
document.write( "A/P=(1+.0015)^t<BR>\n" );
document.write( "3=(1.0015)^t<BR>\n" );
document.write( "take log of both sides<BR>\n" );
document.write( "log(3)=t*log(1.0015)<BR>\n" );
document.write( "log(3)/log(1.0015)=t<BR>\n" );
document.write( "using log key on calculator<BR>\n" );
document.write( "t&#8776;733 weeks or 14 years </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );