The mean weight of 6 boys in a group is 48 kg. The individual weights of five of them are 51 kg, 45 kg, 49 kg, 46 kg and 44 kg. Find the weight of the sixth boy.
Given,
Mean weight of 6 boys = 48 kg
Sum of their weights = 6 × 48 = 288 kg
Sum of weight of 5 boys = 51 + 45 + 49 + 46 + 44 = 235 kg
Hence,
Weight of sixth boy = total weight – weight of 5 boys = 288 – 235 = 53 kg.