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Practice mode Time and Distance

Two trains 150 m and 210 m long run on parallel tracks in opposite directions at 50 km/h and 40 km/h. How long do they take to cross each other completely?

Correct answer B. 14.4 seconds

Explanation

Relative speed = 50 + 40 = 90 km/h = 25 m/s. Total length = 360 m, so time = 360 / 25 = 14.4 seconds.

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