document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=860047>Question 860047</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The first term of an AP is 7, the last term is 77,the sum is 380. Find the common difference in the series?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #518117 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=518117\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 380 = ½(7 + 77)n<BR>\n" );
document.write( "380 = ½(84)n<BR>\n" );
document.write( "380 = 42n<BR>\n" );
document.write( "190=21n\r<BR>\n" );
document.write( "\n" );
document.write( "N is not a whole number.<BR>\n" );
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