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  1. A is faster than B. A and B each walk 24 km. The sum of their speeds is 7 km/hr and the sum of times taken by them is 14 hours. Then, A's speed is equal to?
    2. A.
    3 km/hr
    B.
    4 km/hr
    C.
    5 km/hr
    D.
    7 km/hr

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    Answer : Option B

    Explanation :

    Let A's speed = x km/hr. Then, B's speed = (7 - x) km/ hr.

    So, 24/x + 24/(7 - x) = 14 

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