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A train moving with the speed of 25 m/s crosses a platform which is one third of its length in 20 seconds. What would be the length of the train?1. 325 m2. 125 m3. 275 m4. 225 m5. 375 m |
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Answer» Correct Answer - Option 5 : 375 m Given: Speed of train = 25 m/s Time taken to cross the platform = 20 second Length of platform = Length of train/3 Formula used: Distance = Speed × Time Solution: Let the length of train be 3x m Length of platform = (1/3) × 3x Length of platform = x m Total distance covered by train = 3x + x = 4x m Distance = Speed × Time ⇒ 4x = 25 × 20 ⇒ 4x = 500 ⇒ x = 125 Length of train = 3x = 3 × 125 ∴ Length of train is 375 m |
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