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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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