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What is the time taken by a train of length 200 m to cross a bridge of length 250 m, running at a speed of 45 m/s?1. 10 sec2. 25 sec3. 15 sec4. 20 sec |
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Answer» Correct Answer - Option 1 : 10 sec Given: Length of the train is 200 m and the length of the bridge is 250 m. Speed of the train is 45 m/s Concept Used: To cover the bridge = To cover the sum of the length of the bridge and train Time = Distance/speed Calculation: Speed of the train is 45 m/s To cross the bridge the train, have to cover a distance of (200 + 250) = 450 m Required time = 450/45 ⇒ 10 second ∴ Time taken by the train to cross a bridge of length 250 m is 10 second. |
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