document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=842381>Question 842381</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The common ratio of a geometric series is 1/3 and the sum of the first 5 terms is 121. What is the value of the first term? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #514279 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=514279\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "S=t*(1 - r^n)/(1 - r)\r<BR>\n" );
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document.write( "121=t*(1 - 1/3^5)/(1 - 1/3)<BR>\n" );
document.write( "t1 = 81<BR>\n" );
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