If the weights of 8 students are 30 kg, 32 kg, 25 kg 41 kg, 36 kg 40 kg, 28 and 20 kg find the mean weight for these students.

The weight (in kg) of seven students are given below: 35, 30, 42, 36, 38, 40, 45 Find the mean weight.

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 weights (in kg) of 15 students are: 31, 35, 27, 29, 32, 43, 37, 41, 34, 28, 36, 44, 45, 42, 30. Find the median. If the weight 44 kg is replaced by 46kg and 27kg by 25kg, find the new median.

The weights (in kg) of 15 students are: 31, 35, 27, 29, 32, 43, 37, 41, 34, 28, 36, 44, 45, 42, 30. Find the median. If the weight 44 kg is replaced by 46 kg and 27 kg by 25 kg, find the new median.

The weights (in kg) of 15 students are : 31, 35, 27, 29, 32, 43, 37, 41, 34, 28, 36, 44, 45, 42, 30. Find the median. If the weight 44 kg is replaced by 46 kg and 27 kg by 25 kg, find the new median.

The mean weight of 25 students of a class is 48 kg. If the mean weight of first 13 students is 50 kg and the last 13 students is 46 kg. Find the weight of the 13th students?

The mean weight of 120 students of a school is 52*75 kg. If the mean weight of 50 of them is 51 kg, find the mean weight of the remaining students.

The mean weight of 120 students of a school is 52*75 kg. If the mean weight of 50 of them is 51 kg, find the mean weight of the remaining students.

Two boys weigh 25 kg and 20 kg. Find the ratio of their weights.