The average weight of 14 children is 22 kg. If the weight of the teacher is also included, the average weight becomes 23 kg. What is the weight of the teacher?
Answer & explanation
Correct answer: option 2
Sum of weight of 14 children = 14 × 22 = 308 kg
Sum of weight of 14 children + 1 teacher = `15 × 23 = 345 kg
Weight of teacher = 345 - 308 = 37 kg