Question

    Bikes 'X' and 'Y' are moving towards one another on a

    straight road at 48 km/h and 60 km/h respectively. If the distance separating them is 600 metres, find the time before they cross each other.
    A 60 secs Correct Answer Incorrect Answer
    B 50 secs Correct Answer Incorrect Answer
    C 20 secs Correct Answer Incorrect Answer
    D 42 secs Correct Answer Incorrect Answer

    Solution

    ATQ,

    Combined speed of bikes 'X' and 'Y' = 48 + 60 = 108 km/h

    = 108 × (5/18) = 30 m/s

    So, required time = 600 ÷ 30 = 20 seconds

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