The mean weight of 60 students of a clas...

The mean weight of 60 students of a class is 52.75 kg. If mean weight of 25 students of this class is 51 kg, find the mean weight (in kg) of remaining 35 students of the class

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The mean weight of 60 students of a class is 52.75 kg. If the mean weight of 25 of them is 51 kg., find the mean weight of remaining 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.

If the average weight of the students of a class is 15kg, the average weight of the students of another class is 30kg and average weight of the students of both the classes is 25kg, then find the ratio of the number of students of the first class to the another class.

Find the mean weight of 20 students in your class.

The mean weight of 20 students is 25 kg and the mean weight of another 10 students in 40 kg . Find the mean weight of the 30 students .

The mean weight of 34 students of a school is 42kg . If the weight of the teacher be included , the mean rises by 400 g. find the weight (in kg) of the teacher.

If the mean weight of 10 students is 25 kg and the mean weight of another 10 students is 35 kg, then the mean weight of 20 students is _______.

The average weight of 30 students in a class is 25kgs. If the weight of the class teacher is added, the average weight increase by 2kgs. The weight of the class teacher (in kgs) is A. 86 B. 84 C. 81 D. 87

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