Question

the mean weight of 6 boys is 48 kg in weight of 5 boys are 51 kg and 49 kg and 45 kg and 46 kg and 44 kg find the weight of 6 boy

Answer 1

let the 6th boy's weight be x.
Mean = 48 kg
sum of weights = 51+49+45+46+44+X = 235 + X
235+ x =48 × 6
x = 288 -235 = 53 kg

hope it helps.