A train of length 250 m crosses a bridge of length 150m in 20 seconds. What is the speed of the train?

92 km/h
80 km/h
72 km/h
70 km/h

Correct Answer: 72 km/h

Explanation:

Length of the train= 250m Length of the bridge= 150m Time taken= 20s Speed = Distance/ Time = 400/20= 20 m/s =72 km/h

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