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    Question

    Rahul travelled from point A to B. Rahul went by bike at

    the speed of 35 km/h and came back at the speed of 15 km/h. If Rahul took 6 hours and 40 min to complete his journey, then what is the distance between A and B?
    A 42 km Correct Answer Incorrect Answer
    B 66 km Correct Answer Incorrect Answer
    C 89 km Correct Answer Incorrect Answer
    D 70 km Correct Answer Incorrect Answer
    E 54 km Correct Answer Incorrect Answer

    Solution

    Average speed of Rahul = 2xy/(x+y) = (2 × 35 × 15)/(35 + 15) = 1050/50 km/h Distance travelled = Speed × Time = 1050/50 × 20/3 = 140 Km Distance between A and B = 140/2 = 70 km

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