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    Question

    There are two trains A and B. A start from point

    X at 6 AM towards point Y. Another train B starts at 7 AM from point X. If they meet at 12 PM and speed of A is 20 km/hr, while that of B is 40 km/hr. Find distance between X and Y.
    A 320 km Correct Answer Incorrect Answer
    B 344 km Correct Answer Incorrect Answer
    C 304 km Correct Answer Incorrect Answer
    D 305 km Correct Answer Incorrect Answer
    E 344 km Correct Answer Incorrect Answer

    Solution

    Speed of train A = 20 kmph
    Speed of train B = 40 kmph
    Time taken by train A to meet train B at 12 PM = 6 hrs
    Time taken by train B to meet train A at 12 PM = 5 hrs
    Distance travelled by train A = 6 × 20 = 120 km
    Distance travelled by train B = 5 × 40 = 200 km
    Therefore, total distance between X and Y = 120 + 200 = 320 km

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