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      Question

      A box has 80 Red, 40Blue and 40 Black Balls. 25% of Red

      Balls and 50% of Blue Balls are taken away, percentage of Black balls at present is
      A 25% Correct Answer Incorrect Answer
      B 50% Correct Answer Incorrect Answer
      C 37.5% Correct Answer Incorrect Answer
      D 33.33% Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Remaining Balls = (80 + 40 +40) – 40 = 120 Required Percentage = 40/120  ×100 = 33.33%

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