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    Question

    In an office, there are 18 employees. The average age of

    all the employees is 28 years. If the age of three senior managers is included, then the average age is increased by 2 years. Find the average age of three senior managers.
    A 25 yrs Correct Answer Incorrect Answer
    B 44 yrs Correct Answer Incorrect Answer
    C 42 yrs Correct Answer Incorrect Answer
    D 63 yrs Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, Average age of 18 employees = 28 years Sum of the ages of 18 employees = 28 × 18 = 504 After including the age of 3 senior managers, new average age = 30 years Sum of the ages of 18 employees including senior managers = 30 × 21 = 630 Sum of the ages of 3 senior managers = 630 – 504 = 126 Average age of 3 senior managers = 126/3 = 42 years

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