Correct Answer - Option 1 : 115
Given:
The average weight of 25 students = 37
Weight of the teacher included then weight increases by = 3 kg
Calculations:
Total weight of 25 students = 25 × 37
⇒ 925
Given that when the weight of the teacher is also included, the average weight increases by 3 kg
Total weight along with the teacher = 40 × 26
⇒ 1040 kg
Now, the weight of the teacher = 1040 - 925
⇒ 115 kg
∴ The weight of the teacher is 115.
