document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=273631>Question 273631</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The average of a list of positive numbers is 20 per cent of the sum of the<BR>\n" );
document.write( "numbers. How many numbers are there in the list?\r<BR>\n" );
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document.write( "(A) 5   (B) 20   (C) 80  (D) 100   (E) Cannot be said. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #199883 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=199883\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let s sum of list<BR>\n" );
document.write( "let a= average <BR>\n" );
document.write( "let n equal number of items in list<BR>\n" );
document.write( "a=s/n<BR>\n" );
document.write( "a=.2s=1/5*s<BR>\n" );
document.write( "s/n=s/5<BR>\n" );
document.write( "n=5 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );