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1. What is the speed of the train whose length is 210 metres? I.  The train crosses another train (Howrah Express/12869) of 300 metres length running in opposite direction in 10 seconds.  II.  The train crosses another train (Howrah Express/12869) running in the same direction at the speed of 60 km/hr in 30 seconds.






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  • By: guest on 01 Jun 2017 05.48 pm
    Time taken to cross the train,
    running in opposite directions = (l1 + l2) sec. (u + v) 10 = (210 + 300) (u + v)    u + v = 51. Time taken to cross the train, running in same direction = (l1 + l2) sec. (u - v) 30 = (210 + 300) (u - 60 x (5/18)) u = 17 + 50 m/sec. 3 Thus, u and v can be obtained. Correct answer is (E).
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