There were 24 studentsina class. One of them, who was 18 years old, left the class and his place was filled up by a new comer.Ifthe average of the class was thereby lowered by 1 month, the age of new comer is-

There were 24 studentsina class. One of them, who was 18 years old, left the class and his place was filled up by a new comer.Ifthe average of the class was thereby lowered by 1 month, the age of new comer is- Correct Answer 16 years

Let the age of new comer be x

Avg age decrease by 1/12 year ⇒24 X 1/12 = 18 –x

⇒x=16 years

Bissoy MCQ

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