document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=330729>Question 330729</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How long would it take an investment of $12,225 at 3 3/4% interest compounded quarterly to triple? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #237095 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=237095\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  How long would it take an investment of $12,225 at 3 3/4% interest compounded quarterly to triple?<BR>\n" );
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document.write( "A(t)=Ao(1+(r/n))^(nt)<BR>\n" );
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document.write( "3(12225)= 12225(1+(0.0375/4))^(4t)<BR>\n" );
document.write( "(1+0.0094)^(4t) = 3<BR>\n" );
document.write( "Take the log of both sides and solve for \"t\":<BR>\n" );
document.write( "(4t) = log(3)/log(1.0094)<BR>\n" );
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document.write( "4t = 117.4221<BR>\n" );
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document.write( "t = 29.35<BR>\n" );
document.write( "Rounding up you get: t = 30 years<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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