A.  3.6 sec

B.  18 sec

C.  36 sec

D.  72 sec

Correct Answer :
36 sec
Explanation :

Speed of train relative to jogger = (45 - 9) km/hr = 36 km/hr.

   = 36 x 5 m/sec
18

   = 10 m/sec.

Distance to be covered = (240 + 120) m = 360 m.

 Time taken = 360 sec = 36 sec.
10

 


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