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    Question

    Average speed of тАШAтАЩ during a 24-hour journey is 35

    km/h. If he covered the first 120 km of his journey at a speed of 20 km/h, then find the speed at which тАШAтАЩ travelled during the remaining journey.
    A 40 km/h Correct Answer Incorrect Answer
    B 51 km/h Correct Answer Incorrect Answer
    C 45 km/h Correct Answer Incorrect Answer
    D 36 km/h Correct Answer Incorrect Answer

    Solution

    Total distance covered by тАШAтАЩ = 24 ├Ч 35 = 840 km Time taken to cover 120 km = 120/20 = 6 hours Time taken to cover remaining distance = 24 тАУ 6 = 18 hours So, required speed = {(840 тАУ 120)/18} = 40 km/h

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