1.

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.

Answer» 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


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