Question

In a class, average weight of 40 students is 35.5kg. If their average weight along with the class teacher is 36 kg. What is the weight in kg of the class teacher??​

Answer 1

let total weight of children be x
x/40 = 35.5
x = 35.5*40 = 1420
let weight of teacher be y
1420+y/41 = 36
1420+y = 36*41 = 1476
y = 1476-1420 = 56