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A train is moving at a speed of 132 kmph. If the length of the train is 110 meters, how long will it take to cross a railway platform 165 meters long?1. 7.5 seconds2. 15 seconds3. 5 second4. 10 seconds |
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Answer» Correct Answer - Option 1 : 7.5 seconds Given: Speed of train = 132 kmph Length of train = 110 meters Length of platform = 165 meters Formula used: Speed = Distance/Time Calculation: To cross railway platform train has to travel distance equal to the sum of length of train and length of platform Total distance = 165 + 110 = 275 meters Speed in m/sec ⇒ 132 × (5/18) m/sec Time = Distance/Speed ⇒ 275/(660/18) ⇒ (275 × 18)/660 ⇒ 7.5 seconds ∴ Time taken by train to cross the platform is 7.5 seconds. |
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