Question
A train 125 m long passes a man, running at 5 km/hr in the same direction in which the train is going, in 10 seconds. The speed of the train is:
Answer: Option B
- Speed of the train relative to man = 125 m/sec 10
= 25 m/sec. 2
= 25 x 18 km/hr 2 5
= 45 km/hr.
Let the speed of the train be x km/hr. Then, relative speed = (x - 5) km/hr.
x - 5 = 45 x = 50 km/hr.
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- Speed of the train relative to man = 125 m/sec 10
= 25 m/sec. 2
= 25 x 18 km/hr 2 5
= 45 km/hr.
Let the speed of the train be x km/hr. Then, relative speed = (x - 5) km/hr.
x - 5 = 45 x = 50 km/hr.
Was this answer helpful ?
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