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      Question

      If x:y = 5:7 and x + y = 408, then find the value of (y

      - x).
      A 48 Correct Answer Incorrect Answer
      B 54 Correct Answer Incorrect Answer
      C 72 Correct Answer Incorrect Answer
      D 68 Correct Answer Incorrect Answer

      Solution

      Let 'x' and 'y' be '5a' and '7a', respectively. ATQ; 5a + 7a = 408 Or, 12a = 408 Or, a = 34 So, (y - x) = (7a - 5a) = 2a = 2 X 34 = 68

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