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A 415 m long train is running at 63 km/h. In how much times will it cross a tunnel 285 m long ?1. 45sec2. 52 sec3. 2 min4. 40 sec |
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Answer» Correct Answer - Option 4 : 40 sec Given The length of train = 415 m Speed of train = 63 km/hr Formula Used Distance = speed × time Calculation Total distance = length of train + length of tunnel = 415 + 285 = 700 m speed of train in m/s = 63 × (5/18) = 17.5 m/s Time taken to cross tunnel = 700/17.5 = 40 sec ∴ The required answer is 40 seconds |
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