document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=979326>Question 979326</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The lesson is all about extracting the roots so correct me if im in the wrong lessons...<BR>\n" );
document.write( "But anyway hope anyone can solve my another question :) <BR>\n" );
document.write( "When the amount of (p) is invested at annual interest rate (r) compounded for (t) years, it will grow to an amount (a) given by the formula\r<BR>\n" );
document.write( "\n" );
document.write( "A=P (1+r)^t\r<BR>\n" );
document.write( "\n" );
document.write( "1 Suppose php 20,000 is invested  at an interested rate (r) compounded annually in 5 years, it will grow to php 60,000. What is the interest rate?\r<BR>\n" );
document.write( "\n" );
document.write( "2 suppose in five years, the php 35,000 invested grows to php 75 345.75 , what is the interest rate? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #600611 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=600611\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> solve for r, A=P (1+r)^t<BR>\n" );
document.write( "A/P = (1+r)^t<BR>\n" );
document.write( "(A/P)^(1/t) = 1+r <BR>\n" );
document.write( "r = (A/P)^(1/t) - 1<BR>\n" );
document.write( "*************************************************************<BR>\n" );
document.write( "1) r = (60000/20000)^(1/5) - 1 = 0.24573094 approx 0.25<BR>\n" );
document.write( "2) r = (75345.75/35000)^(1/5) - 1 = 0.165730456 approx 0.17<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );