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    Question

    100 metre long train ‘A’ can cross a platform of

    length 50 metres in 20 seconds. If the speed of train ‘B’ is 6 m/s more than that of train ‘A’, then find the distance travelled by train ‘B’ in 5 hours.
    A 213 km Correct Answer Incorrect Answer
    B 223 km Correct Answer Incorrect Answer
    C 203 km Correct Answer Incorrect Answer
    D 243 km Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Speed of train ‘A’ = {(100 + 50)/20} = (150/20) = 7.5 m/s Speed of train ‘B’ = 7.5 + 6 = 13.5 m/s = 13.5 × (18/5) = 48.6 km/hr Required distance travelled by train ‘B’ = 48.6 × 5 = 243 km

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