A.  3.6 sec

B.  18 sec

C.  36 sec

D.  72 sec

1
Correct Answer :
36 sec
Explanation :

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

= [ 36 x (5/18) ] m/sec

= 10 m/sec

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

=> Time taken = (360/10) sec = 36 sec


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