Out of 10 teachers of a school, one teacher retires and in place of him a new te

Question

Out of 10 teachers of a school, one teacher retires and in place of him a new teacher 25 years old joins. As a result of it average age of the teachers reduces by 3 years. Age of the retired teacher (in years) is -

Options:

A . 55

B . 65

C . 45

D . 75

Answer: Option A

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