document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=853828>Question 853828</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a geometric progression the sum of 2nd and 4th terms is 30. The difference of <BR>\n" );
document.write( "6th and 2nd terms is 90. Find the 8th term of a geometric progression, whose <BR>\n" );
document.write( "common ratio is greater than 1.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #514283 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=514283\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Tn = t * r^(n - 1)<BR>\n" );
document.write( "30 = t * r^(1)+t * r^(3),<BR>\n" );
document.write( "90 = t * r^(5)-t * r^(1)<BR>\n" );
document.write( "r = 2,   t = 3<BR>\n" );
document.write( "Tn = t * r^(n - 1)<BR>\n" );
document.write( "T8 = 3 * 2^(7)<BR>\n" );
document.write( "T8 = 384\r<BR>\n" );
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