Question : The average weight of 40 children in a class is 36.2 kg. When three more children of weights 42.3 kg, 39.7 kg, and 39.5 kg join the class, the average weight of the 43 children in the class is:

Option 1: 39.2 kg

Option 2: 36.5 kg

Option 3: 38.35 kg

Option 4: 37.3 kg

Question : The average weight of three men, A, B and C is 84 kg. Another man, D, joins the group and the average now becomes 80 kg. If another man, E, whose weight is 3 kg more than that of D, replaces A, then the average weight of B, C, D and E becomes 79 kg. Then the

Question : The average weight of three men A, B, and C is 84 kg. Another man, D joins the group and the average now becomes 80 kg. If another man, E whose weight is 3 kg more than that of D, replaces A, then the average weight of B, C, D, and E becomes 79 kg. Then the weight of A

Question : The average weight of a group of 3 people A. B and C is 70 kg. When D joins this group, the average becomes 60 kg. One man E, whose weight is 5 kg more than that of D, replaces A and the average weight of B, C, D, and E now becomes 59 kg. A's weight (in kg) is:

Question : The average weight of some students in a class was 60.5 kg. When 8 students, whose average weight was 65 kg, joined the class, then the average weight of all the students increased by 0.9 kg. The number of students in the class, initially, was:

Question : There are 50 students in a class with an average weight of 45 kg. When one student leaves the class, the average weight reduces by 100 g. What is the weight of the student who left the class?