Time and Distance Q.16

0. A 280 m train is moving at a speed of 80 kmph. How much time will it take to pass a bridge that is 120 m long?

Answer
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Option : C
Explanation : Total distance to be travelled = 280 + 120 = 400 m
Speed should be converted into m/s.
Speed = 40 kmph = 40 × 5/18 = 100/9 m/s
Time = D/S = 400/100/9 = 36 s

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