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    Question

    The average age of three friends

    Maya, Nirmal, and Raju is 27 years. The age ratio of Nirmal to Raju is 9:5, and Maya is 11 years younger than Nirmal. Determine the square root of the product of Maya’s and Nirmal’s ages.
    A 25 Correct Answer Incorrect Answer
    B 30 Correct Answer Incorrect Answer
    C 12 Correct Answer Incorrect Answer
    D 18 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, Let present age of Nirmal and Raju are ‘9x’ and ‘5x’ respectively. Age of Maya = 9x – 11 (9x – 11) + 9x + 5x = 81 23x = 92 x = 4 Age of Maya = 9x – 11 = 25 years Age of Nirmal = 9x = 36 years Square root of product of ages of Maya and Nirmal = √[25 × 36] = 30

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