Subject Category > Economics
Q. A train 110 metres long is travelling at the speed of 60 km. per hr. How long will it take to cross a man walking in the direction opposite to the train, at the speed of 6 km./hr.?
A) 3 seconds
B) 6 seconds
C) 9 seconds
D) 12 seconds
✔ 6 seconds
Additional Information > Exam point of View
The relative speed = 60 + 6 = 66 km/hr = 66 × (1000/3600) m/s = 55/3 m/s. Time = distance/speed = 110 / (55/3) = 6 seconds. Thus, it will take 6 seconds.Asked Question
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