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    Question

    Average speed of ‘A’ during a 24-hour journey is 36

    km/h. If he covered the first 150 km of his journey at a speed of 15 km/h, then find the speed at which ‘A’ travelled during the remaining journey.
    A 44 km/h Correct Answer Incorrect Answer
    B 51 km/h Correct Answer Incorrect Answer
    C 58 km/h Correct Answer Incorrect Answer
    D 36 km/h Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Total distance covered by ‘A’ = 24 × 36 = 864 km Time taken to cover 150 km = 150/15 = 10 hours Time taken to cover remaining distance = 24 – 10 = 14 hours So, required speed = {(864 – 150)/14} = 51 km/h

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