Question

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

    X at 8 AM towards point Y. Another train B starts at 9 AM from point X. If they meet at 10 AM and speed of A is 20 km/hr, while that of B is 30 km/hr. Find distance between X and Y.
    A 20 km Correct Answer Incorrect Answer
    B 60 km Correct Answer Incorrect Answer
    C 45 km Correct Answer Incorrect Answer
    D 70 km Correct Answer Incorrect Answer
    E 44 km Correct Answer Incorrect Answer

    Solution

    Speed of train A = 20 kmph
    Speed of train B = 30 kmph
    Time taken by train A to meet train B at 10 AM = 2 hrs
    Time taken by train B to meet train A at 10 AM = 1 hrs
    Distance travelled by train A = 2 × 20 = 40 km
    Distance travelled by train B = 1 × 30 = 30 km
    Therefore, total distance between X and Y = 40 + 30 = 70 km

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