document.write( "Question 304705: a class has 24 boys and 16 girls. On a test the class mean was 75. the mean of the girl's score was 72. What was the mean of the boy's sccores? \n" ); document.write( "
Algebra.Com's Answer #218201 by mananth(16946)![]() ![]() You can put this solution on YOUR website! a class has 24 boys and 16 girls. On a test the class mean was 75. the mean of the girl's score was 72. What was the mean of the boy's sccores?\r \n" ); document.write( "\n" ); document.write( "24+16 = 40 students.... mean = 75 \n" ); document.write( "Total scored by 40 students = 3000\r \n" ); document.write( "\n" ); document.write( "Girls = 16 ....their mean = 72 \n" ); document.write( "total scored by girls = 16*72= 1152\r \n" ); document.write( "\n" ); document.write( "Difference between the scores will give total score of boys.\r \n" ); document.write( "\n" ); document.write( "3000-1152 = 1848\r \n" ); document.write( "\n" ); document.write( "Number of boys = 24 \r \n" ); document.write( "\n" ); document.write( "their mean will be 1848 / 24\r \n" ); document.write( "\n" ); document.write( "=77\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |