document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=971960>Question 971960</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If the pupil in a class sends a New Year greeting cards to every classmate ,the total number of cards sent out will be 870. Find the number of pupils in the class.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #594418 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=594418\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> EVERY PUPIL SENDS CARDS TO (X-1) PUPILS.<BR>\n" );
document.write( "X IS THE TOTAL NUMBER OF PUPILS.<BR>\n" );
document.write( "X(X-1)=870<BR>\n" );
document.write( "X^2-X-870=0<BR>\n" );
document.write( "(X-30)(X+29)=0<BR>\n" );
document.write( "X-30=0<BR>\n" );
document.write( "X=30 NUMBER OF PUPILS. </SPAN>\n" );
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