document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=910817>Question 910817</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An investment offers to quadruple your money in 15 months (don't believe it).<BR>\n" );
document.write( "What rate per three months are you being offered?  I got 21.25% Could you show me where I went wrong please? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #552720 by </B><A HREF=/tutors/aboutme.mpl?userid=LinnW><B>LinnW(1048)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=LinnW><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=LinnW><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=552720\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x = the percent increase every 3 months<BR>\n" );
document.write( "1(1+x)^5 = 2 , The original amount 1 compounded at x percent for 5 periods of<BR>\n" );
document.write( "3 months each<BR>\n" );
document.write( "Plugging the above into a solver like www.wolframalpha.com<BR>\n" );
document.write( "the result is x is approximately 0.148698<BR>\n" );
document.write( "Testing 1.148698^5 we get 1.9999969... so we are pretty close.<BR>\n" );
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