The weight of a cylinder filled with gas is 30 kg. If the weight of the empty cylinder is 14 kg 80 g find the weight of the gas contained in it.

The mass of a cylinder filled with gas is 30 kg 250 g and the mass of the empty cylinder is 14 kg 480 g. How much is the mass of the gas contained in it ?

The weight of an empty gas cylinder is 18 kg 75 g. The weight of the gas contained in it is 12 kg 350 g. What is the total weight of the cylinder filled with gas?

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.

The average weight of a class of 24 students is 35 kg.If the weight of the teacher be included, the average rises by 400 g.The weight of the teacher is (a) 45kg (b) 50kg (c) 53kg (d) 55kg

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 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.