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      Question

      A tank is 3/4 full of water. After removing 30 litres of

      water, it becomes 3/8 full. Find the full capacity of the tank.
      A 65 litres Correct Answer Incorrect Answer
      B 42 litres Correct Answer Incorrect Answer
      C 80 litres Correct Answer Incorrect Answer
      D 24 litres Correct Answer Incorrect Answer

      Solution

      Let capacity of tank = C litres Initially water = (3/4)C After removing 30 L, water = (3/8)C So, (3/4)C − 30 = (3/8)C (3/4 − 3/8)C = 30 (6/8 − 3/8)C = 30 (3/8)C = 30 C = 30 × (8/3) = 80 litres

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