document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=166892>Question 166892</A>: <I><SPAN STYLE=\"word-break: break-all;\"> you invest $400. After one year, the total of the investment is $414.40. Use the formula A=P+Prt to find the annual simple interest rate for the investment, where A is the total of hte investment, P is the principal (amount invested), r is the annual simple interest rate, and t is the time in years. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #122988 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=122988\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 414.40=400+400*r*1<BR>\n" );
document.write( "414.40=400+400*r<BR>\n" );
document.write( "414.40-400=400t<BR>\n" );
document.write( "14.40=400t<BR>\n" );
document.write( "t=14.40/400<BR>\n" );
document.write( "t=.036 or 3.6% is the interest rate. </SPAN>\n" );
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