Question

a train 280 M long is running at a speed of 42 km hour how much time will it take to pass a man standing on a platform

Answer 1

approx 42.8 km
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Answer 2

first we have to convert speed of train in m/s
so speed of train =42×5/18=35/3m/s
a train will pass a man in how much time,in how much time train will cross a point
so train will cover his length for crossing the man so passing time =280/35/3=24sec