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The mean of marks secured by 60 students in division A of class X is 64, 40 students of division B is 60 and that of 60 students of division C is 58. Find themean of marks of the students of three divisions of Class X.

The mean of marks secured by 60 students in division A of class X is 64, 40 students of division B is 60 and that of 60 students of division C is 58. Find themean of marks of the students of three divisions of Class X. Correct Answer 60.75

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