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      Question

      A plane flies a distance of 600 km in 2 hours. The speed

      of a helicopter is 50% more than that of the plane, and the speed of a glider is 20% more than that of the helicopter. Find the difference between the time (in minutes) taken by the glider and the helicopter, to travel 50% more distance than flown by the plane.
      A 12 Correct Answer Incorrect Answer
      B 45 Correct Answer Incorrect Answer
      C 20 Correct Answer Incorrect Answer
      D 50 Correct Answer Incorrect Answer
      E none of these Correct Answer Incorrect Answer

      Solution

      ATQ,

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