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    Question

    If β€˜X’, β€˜Y’ and β€˜Z’ are in proportion in the

    same order and β€˜X’ = 36 and β€˜Y’ = 54, then find the value of β€˜Z’.
    A 25 Correct Answer Incorrect Answer
    B 55 Correct Answer Incorrect Answer
    C 61 Correct Answer Incorrect Answer
    D 81 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Given, X = 36

    And, Y = 54

    Since, β€˜X’, β€˜Y’ and β€˜Z’ are in proportion.

    So, (X/Y) = (Y/Z)

    So, Z = (54 Γ— 54)/36 = 81

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