Question

16. In a class, the average weight of students is 60 kg.
If a student weighing 68 kg joins the class, the average weight increases by 1 kg. How many students were there in the class initially?​

Answer 1

Let there be n students in the class.

60n+64(8)=62(n+8)

62n−60n=64(8)−62(8)

2n=16

n=8

Therefore, initially there were 8 students in the class.

Answer 2

Step-by-step explanation:

The number of students would be 30 - 40. Approx.