(A) 6 sec
(B) 18 sec
(C) 36 sec
(D) 72 sec
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(A) 6 sec
(B) 18 sec
(C) 36 sec
(D) 72 sec
Answer: Option (C) 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.