## Realated Questions

The average age of 40 students of a class is 15 years. When 10 new students are admitted, the average is increased by 0.2 year. The average age of the new students is

The average age of 25 students is 10 years. If the teacher’s age is also included, the average age increases by one year. The age of the teacher is

The average weight of 8 men is increased by 1.5 kg. When one of the men who weighs 65 kg is replaced by a new man, the weight of new man is