Correct Answer - Option 2 : 180 km/hr
Given:
Length of train = 225 m
Length of platform = 475 m
Time taken = 14 seconds
Formula used:
Speed of train = Total length covered/Total time taken
Total length covered = Length of train + Length of platform
Calculation:
Total length covered = (225 + 475) m
⇒ 700 m
Speed of train = 700/14 m/s
⇒ 50 m/s = 50 × (18/5) km/hr
⇒ 180 km/hr
∴ The speed of train is 180 km/hr
