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1). 83 years2). 65 years3). 85 years4). 80 years |
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Answer» Let the INITIAL average be ‘y’ ∴ The initial sum of the AGES of the 20 employees was 20Y Let ‘x’ be the age of the person who retired ∴ After the person RETIRES, the sum will be 20y – x + 23 We know that, Sum/(Number of values) = Average According to the given condition, ⇒ (20y – x + 23)/20 = y – 3 ∴ 20y – x + 23 = 20y – 60 ∴ x = 83 ∴ The age of the person who retired was 83 |
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