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Out of 10 teachers of a school, one teacher retires and in his place, a new teacher of age 25 years joins. As a result, average age of teachers is reduced by 3 years. The age (in years) of the retired teacher is

Explanation:

Age of retired teacher = 25 + (10 x 3)

= 25 + 30 = 55 years.

Hence, option 3 is the correct answer.

By: Amit Kumar

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