Question

A train of length 160 metres is travelling with a speed of 48 km/hour.
Find the time taken by the train to cross a platform of length 320 metres.​

Answer 1

Answer:

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Step-by-step explanation:

Speed = distance travelled / time taken

Here, distance travelled = length of the train + length of the platform

Because your train will be considered crossed the platform only after its full length has crossed the platform

Therefore, distance = 160+160 = 320m

Time = 16s

Speed = distance / time

Speed = 320/16 = 20m/sec

Now, convert it to km/h

Use the basic concept , 1m = 1/1000km

And 1sec = 1/3600 hr (1hr = 60min = 60*60sec)

Therefore, our speed = (20*3600)/1000 = 72km/hr