The average weight of 24 students in a class is 35 kg. if the weight of the teacher is included, the average weight rises by 400 gms. Find the weight of the teacher.
Total weight of 24 students
= (24 × 35) kg = 840 kg
Total weight of 24 students and the teacher
= (25 × 35.4) kg = 885 kg
Weight of teacher
= (885 – 840) kg = 45 kg
