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A train travels at speed of 108 km/h crosses a man in 6 seconds. Find the time taken by train to cross a 210 meter long platform
1. 13 seconds
2. 12 seconds 
3. 10 seconds 
4. 8 seconds

1 Answer

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Best answer
Correct Answer - Option 1 : 13 seconds

Given:

Speed of train = 108 km/h

T = 6 seconds

L of platform = 210 m

Formula used:

Speed = Distance/Time

m/s = 5/18 km/hr

Calculation:

Converting speed of train from km/h to m/s = 108 × 5/18

⇒ speed = 30 m/s

⇒ Length of train = 30 × 6

⇒ Length of train = 180 m

⇒ Time taken to cross platform of 210 m = (210 + 180)/30

⇒ Time taken to cross platform of 390 m = 13 seconds

time taken to cross platform of 210 m is 13 seconds

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