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 #641667 by mananth(16946)![]() ![]() You can put this solution on YOUR website! the mean of the girls scores was 81, 15 girls in the class\r \n" ); document.write( "\n" ); document.write( "Total score = 81*15\r \n" ); document.write( "\n" ); document.write( " and the mean of the boys scores was 78 there were 25 boys \r \n" ); document.write( "\n" ); document.write( "Total score = 78*25\r \n" ); document.write( "\n" ); document.write( "Mean score of class = (81*15 +78*25)/ ((15+25)= 79.125 \n" ); document.write( " |