<PRE><B>Question 543859</B>
Suppose that the mean score of a class of 31 students was 80. The 15 male students in the class had a mean score of 70. What was the mean score for the 16 female students?
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Total points for the class: 80*31 = 2480
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Total points for the boys: 15*70 = 1050
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mean score for the girls: (2480-1050)/16 = 89.375
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Cheers,
Stan H.
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