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    Question

    Average speed of β€˜A’ during a 24-hour journey is 34

    km/h. If he covered the first 120 km of his journey at a speed of 30 km/h, then find the speed at which β€˜A’ travelled during the remaining journey.
    A 44 km/h Correct Answer Incorrect Answer
    B 34.8 km/h Correct Answer Incorrect Answer
    C 38 km/h Correct Answer Incorrect Answer
    D 50 km/h Correct Answer Incorrect Answer

    Solution

    Total distance covered by β€˜A’ = 24 Γ— 33 = 816 km Time taken to cover 120 km = 120/30 = 4 hours Time taken to cover remaining distance = 24 – 4 = 20 hours So, required speed = {(816 – 120)/20} = 34.8 km/h

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