document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=253011>Question 253011</A>: <I><SPAN STYLE=\"word-break: break-all;\">  x+y =10       y+z = 15       x+z = 17<BR>\n" );
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document.write( "What is the average (arithmetic mean) of x, y and z ?\r<BR>\n" );
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document.write( "(A) 21     (B) 17     (C) 15     (D) 7   (E) It cannot be determined from the information given </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #185273 by </B><A HREF=/tutors/aboutme.mpl?userid=hokies><B>hokies(65)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=hokies><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=hokies><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=185273\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Add all 3 equations:<BR>\n" );
document.write( "2x+2y+2z = 42<BR>\n" );
document.write( "x+y+z = 21<BR>\n" );
document.write( "(x+y+z)/3 = 7<BR>\n" );
document.write( "The answer is 7 </SPAN>\n" );
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