Average weight of 13 students in a class is 55 kg, out of which the average weight of the first 6 students is 53 kg
Average weight of 13 students in a class is 55 kg, out of which the average weight of the first 6 students is 53 kg and the average weight of next 6 students out of the remaining 7 is 56 kg, then find the weight of the remaining one student. a) 61 kg b) 57 […]










