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Q.
A jogger running at 9 km/hr along side a railway track is 260 m ahead of the engine of a 140 m long train running at 45 km/hr in the same direction. In how much time will the train pass the jogger ?
A.
25 sec
B.
40 sec
C.
38 sec
D.
32 sec
View Answer
Correct choice: B
Explanation:
Speed of train relative to jogger = 45 - 9 = 36 km/hr. = 36 x 5/18 = 10 m/sec. Distance to be covered = 260 + 140 = 400 m. Time taken = 400/10 = 40 sec.
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