Question

A school had 100 students aged 20 years on an average. At the end of the year, 20 students aged 22 years on an average left and 25 students of 18 years on an average joined the school. What is the average age of the present students of the school?​

Answer 1

Step-by-step explanation:

At the end of year average age = 21

Total age = 100 × 21 - 20 × 22 + 25 × 18 = 2,110

New average age = 2110 / 105 ≈ 20.10 years

Answer 2

Answer:

I don't know what to do with it but I think it is a good idea to have a good time