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    Question

    Tannish travels from A to B at a speed of 20 km/h, from

    B to C at 15 km/h and from C to D at 30 km/h. If AB = BC = CD, then find Tannish’s average speed for the whole journey
    A 22 km/h Correct Answer Incorrect Answer
    B 19 km/h Correct Answer Incorrect Answer
    C 20 km/h Correct Answer Incorrect Answer
    D 21 km/h Correct Answer Incorrect Answer

    Solution

    The correct answer is C

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