A train running at 72 km/h crosses a 200 m long tunnel in 20 seconds. What is the length of the train?

Topic: Speed, Time &amp; Distance
Subtopic: Trains

A150 m

B200 m

C250 m

D300 m

Explanation

Speed in m/s = 72 * (5/18) = 20 m/s. Total distance = Speed * Time = 20 * 20 = 400 m. Train length = 400 – 200 = 200 meters.

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