The mean weight of 25 students of a class is 52 kg. if the mean weight of the first 13 student of the class is 48 kg and that of the last 13 students
The mean weight of 25 students of a class is 52 kg. if the mean weight of the first 13 student of the class is 48 kg and that of the last 13 students is 55kg , find the weight of the 13th student.
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