document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=856827>Question 856827</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An investment pays simple interest, and quadruples in 12 years. What is the interest rate? <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #516186 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=516186\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let Principal be x\r<BR>\n" );
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document.write( "4x in 12 years so interest is 3x\r<BR>\n" );
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document.write( "SI = P * N * R\r<BR>\n" );
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document.write( "3x= x*12*R\r<BR>\n" );
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document.write( "3/12 = R\r<BR>\n" );
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document.write( "1/4 = R\r<BR>\n" );
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document.write( "25% </SPAN>\n" );
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