document.write( "Question 1026421: in mathematics test,the mean of the girls scores was 81 and the mean of the boys scores was 78.If there was 25 boys and 15 girls in the class,what was the class mean \n" ); document.write( "
Algebra.Com's Answer #641666 by Cromlix(4381)\"\" \"About 
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Hi there,
\n" ); document.write( "81 x 15 = 1215
\n" ); document.write( "78 x 25 = 1950
\n" ); document.write( "..Total = 3165
\n" ); document.write( "3165/40 = 79.125
\n" ); document.write( "This is the combined class mean.
\n" ); document.write( "Hope this helps :-)
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