A train 280 metres long is running at a speed of 42 km/hr. How much time will it
take to pass a man standing on a platform?
pole in 28 seconds. Find the speed of the train in km/hr
plz Help to get que..
with full explanation
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Answer:
To cross the man standing on the platform the train has to cover it's own distance
So time taken = Distance/ speed
= [(280÷1000)/(420÷3600)] seconds
= 2.4 seconds
Time taken to cross the pole = (28÷3600) hrs
Distance to be covered = 28 metres = (280÷1000) km
speed = Distance/Time
= (280÷1000)/(28÷3600)
= 36 km/hr
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