Question

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Answer 1

Answer:20 seconds

Step-by-step explanation:

Length of train= 200 m

Length of platform= 100m

Total distance to be travelled = 200+100 (considering length of train as well) = 300m

Speed= 54 km/h= 54*5/18 (Multiplying 5/18 to convert it into m/s)

          = 3*5= 15m/s

We know that,

speed=distance/time

time= distance/speed = 300/15= 20 seconds

I hope it will help you. May you have a good day

Answer 2

Answer:

20 seconds

Step-by-step explanation:

200+100=300

300/54×3600/1000

ans =20 sec