The average age of 24 boys and their teacher is 15 years. When the teacher's age

Question

The average age of 24 boys and their teacher is 15 years. When the teacher's age is excluded, the average age decreases by 1 year. The age of the teacher is :

Options:

A . 38 years

B . 39 years

C . 40 years

D . 41 years

Answer: Option B

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