The average weight of `A ,\ B` and `C` is 45 kg. If the average weight of `A` and `B` be 40 kg and that of `B` and `C` be 43 kg, then the weight of `B` is: (a) 17 kg (b) 20 kg (c) 26 kg (d) 31 kg

The average weight of A,B,C is 45 kg If the average weight of A and B be 40 kg and that of B and C be 49 kg then the weight of B is

The average weight of A,B and C is 65 kg. If the average weight of A and B is 63.5 kg, and the average weight of A and C is 67.5 kg , then the weight of A (in kg) is :

The average weight of A,B and C is 65 kg. If the average weight of C and B is 61.5 kg, and the average weight of A and C is 68.5 kg, then the weight of C (in kg) is:

The average weight of three boys A , B and C is 54 1/3 kg, while the average weight of three boys B , D and E is 53 kg. What is the average weight of A , B , C , D and E ? (a) 52.4 kg (b) 53.2 kg (c) 53.8 kg (d) Data inadequate (e) None of these