The mean height of a group of 30 students is 150 cm. If a 150 cm tall student is included in the group, then find the mean heigh of the new group.

The mean height of a group of 30 students is 150 cm. If a 150 cm tall student is included in the group , then the mean height of the new group is ___.

The mean weight of a group of 9 students is 19 kg. If a boy of weight 29 kg is joined in the group, then find the mean weight of 10 students.

The mean weight of a group of 9 students is 19 kg . If a body of weight 29 kg is joined in the group , then find the mean weight of 10 students. The following are the steps involved in solving the above problem . Arrange them in sequential order . (A) The mean weight of 10 students = (200)/(10) kg (B) The total weight of 9 students = 9 xx 19 kg = 171 kg (C) The total weight of 10 students = (171 + 29) kg = 200 kg (D) therefore The mean weight = 20 kg

The mean weight of 9 students is 25 kg . If one more student is joined in the group the mean is unaltered , then the weight of the 10th student is "_________" (in kg ) .

The mean weight of 21 students is 21 kg. If a student weighing 21 kg is removed from the group, then what is the mean weight of the remaining students ?

The mean weight of 21 students is 21 kg. If a student weighing 21 kg is removed from the group, then I what is the mean weight of the remaining students ?