document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=971751>Question 971751</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Two classes take a statistic exam. In the first class, 25 students had a mean score of 80. The two classes together had 40 students with a mean score of 83. Compute the mean score of the second class. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #594154 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=594154\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> mean = total/number\r<BR>\n" );
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document.write( "total= mean * number<BR>\n" );
document.write( "total = 83*40 = 3320<BR>\n" );
document.write( "But class of 25 had a mean of 80, so their total was 2000.\r<BR>\n" );
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document.write( "There are 15 in the other class, and their total had to be 1320.\r<BR>\n" );
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document.write( "The mean in the other class is 1320/15.\r<BR>\n" );
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document.write( "It equals 88.\r<BR>\n" );
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document.write( "Mean of class 1 was 80; class 2, smaller, had a mean of 88.  The combined mean should be weighted closer to class 1, and it is. </SPAN>\n" );
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