The 20 clerks in a bank branch have an average age of 28 years. When the branch manager's age is added, the average goes up by 1 year. What is the manager's age (in years)?

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Accepted Answer

49. New total for 21 people = 21 × 29 = 609; clerks' total = 20 × 28 = 560. Manager's age = 609 − 560 = 49.

The 20 clerks in a bank branch have an average age of 28 years. When the branch manager's age is added, the average goes up by 1 year. What is the manager's age (in years)?

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