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    Question

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

    X at 5 AM towards point Y. Another train B starts at 6 AM from point X. If they meet at 8 AM and speed of A is 21 km/hr, while that of B is 31 km/hr. Find distance between X and Y.
    A 125 km Correct Answer Incorrect Answer
    B 148 km Correct Answer Incorrect Answer
    C 220 km Correct Answer Incorrect Answer
    D 100 km Correct Answer Incorrect Answer
    E 240 km Correct Answer Incorrect Answer

    Solution

    Speed of train A = 21 kmph
    Speed of train B = 31 kmph
    Time taken by train A to meet train B at 8 AM = 3 hrs
    Time taken by train B to meet train A at 8 AM = 2 hrs
    Distance travelled by train A = 3 × 21 = 63 km
    Distance travelled by train B = 2 × 31 = 62 km
    Therefore, total distance between X and Y = 63 + 62 = 125 km

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