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    Question

    A train travels a certain route in 250 minutes at a

    speed of 48 km/h. If the same journey is done by bus in 5 hours, what should be the speed of the bus?
    A 60 km/h Correct Answer Incorrect Answer
    B 54 km/h Correct Answer Incorrect Answer
    C 40 km/h Correct Answer Incorrect Answer
    D 32 km/h Correct Answer Incorrect Answer

    Solution

    ATQ,

    When distance is constant,

    Time ∝ 1/Speed

    5 hours = 5 × 60 = 300 minutes

    (Speed of train) ÷ (Speed of bus) = 300 ÷ 250 = 6:5

    Speed of bus = (5/6) × 48 = 40 km/h

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