document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1086820>Question 1086820</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the sum of this infinite geometric series: 1000 – 200 + 40 – … </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #701065 by </B><A HREF=/tutors/aboutme.mpl?userid=htmentor><B>htmentor(1343)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=htmentor><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=htmentor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=701065\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The sum of an infinite geometric series with first term a and common ratio r is:<BR>\n" );
document.write( "S = a/(1-r)<BR>\n" );
document.write( "In this case r = -200/1000 = -1/5, and a = 1000<BR>\n" );
document.write( "Thus S = 1000/(1+1/5) = 833 1/3 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );