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    Question

    A Bus covers its journey at a speed of 40km/hr in 8

    hours. If the same distance is to be covered in 4 hours, then by how much % will be the speed of the bus have to be increased?
    A 50% Correct Answer Incorrect Answer
    B 120% Correct Answer Incorrect Answer
    C 100% Correct Answer Incorrect Answer
    D 176% Correct Answer Incorrect Answer
    E none of these Correct Answer Incorrect Answer

    Solution

    ATQ, Let the Speed of the bus when the distance is to be covered in 4 hours is = 40 x (8/4) = 80km/hr Hence the required% will be then = [(80 – 40)/40] x 100 = 100%

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