A train 200 m long passes a 300 m long platform in 20 seconds. Find the speed of the train in km/h.

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

A72 km/h

B90 km/h

C108 km/h

D120 km/h

Explanation

Total distance = 200 + 300 = 500 m. Speed in m/s = 500 / 20 = 25 m/s. Speed in km/h = 25 * (18 / 5) = 90 km/h.

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