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A train 175 m long takes 10 seconds to cross a man standingat the entrance of a tunnel 245 m long. How many secondsafter crossing the man will the train cross the tunnel?12 seconds14 seconds18 seconds24 seconds |
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Answer» Explanation: velocity of TRAIN = 175/10 = 17.5 m/s time = DISTANCE / velocity =( 175 + 245) / 17.5 = 420 / 17.5 = 4200/ 175 |
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