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  1. A train 110 m long travels at 60 km/hr. How long does it take to cross a platform 240 metres long ?
    1. 21 sec
    2. 20 sec
    3. 18 sec
    4. 24 sec
Correct Option: A

Distance covered = 110 + 240 = 350 m
Speed = 60 km/ph = 60 x (5/18) m/s = 50/3 m/sec.
Time = distance / speed = 350 x 3 / 50 = 21 sec.


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