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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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