document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=893205>Question 893205</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The mean of four numbers is 12. The mean of three of the numbers is 13. What is the fourth number? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #541169 by </B><A HREF=/tutors/aboutme.mpl?userid=rfer><B>rfer(16322)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rfer><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=541169\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (13+13+13+x)/4=12<BR>\n" );
document.write( "39+x=12*4<BR>\n" );
document.write( "x=48-39<BR>\n" );
document.write( "x=9 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );