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    Question

    The present average age of β€˜X’ and β€˜Y’ is 16

    years, present average age of β€˜X’ and β€˜Z’ is 56 years and present average age of β€˜Y’ and β€˜Z’ is 22 years. Find the present age of β€˜X’.
    A 50 yrs Correct Answer Incorrect Answer
    B 40 yrs Correct Answer Incorrect Answer
    C 35 yrs Correct Answer Incorrect Answer
    D 52 yrs Correct Answer Incorrect Answer
    E none of these Correct Answer Incorrect Answer

    Solution

    According to the question, Present ages of (X + Y) = 16 Γ— 2 = 32…. (1) Than, the Present ages of (X + Z) = 56 Γ— 2 = 112…. (2) Than, the Present ages of (Y + Z) = 22 Γ— 2 = 44….. (3) Therefore From equations (1), (2) and (3), we get Present ages of (X + Y + Z) = (32 + 112+ 44)/2 = 94 years Therefore From equation (3)we will get the, present age of β€˜X’ = 94 – 44 = 50 years

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