document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=999055>Question 999055</A>: <I><SPAN STYLE=\"word-break: break-all;\"> in physics examination the mean mark for the first 12 students is 60, that of the next 20 students is 50 and that of the remain y student is  x. what is the mean mark for the whole class in the exam in terms of x and y </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #616749 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><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=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=616749\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The mean in this case divides the total points by the total number of students.<BR>\n" );
document.write( "Here the total points are 12(60) + 20(50) + y(x) = 1720 + xy<BR>\n" );
document.write( "The total number of students  is 12 + 20 + y = 32 + y<BR>\n" );
document.write( "So that the mean is the quotient<BR>\n" );
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