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Qa class has 24 boys and 16 girls

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?

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#1NickAnswered at 2014-04-13 15:27:51
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? 24+16 = 40 students.... mean = 75 Total scored by 40 students = 3000 Girls = 16 ....their mean = 72 total scored by girls = 16*72= 1152 Difference between the scores will give total score of boys. 3000-1152 = 1848 Number of boys = 24 their mean will be 1848 / 24 =77
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