1.  A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train?
A. 120 metres
B. 180 metres
C. 324 metres
D. 150 metres

Answer: Option D

Explanation:

Speed= 60 x 5 m/sec = 50 m/sec.
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Length of the train = (Speed x Time).

Length of the train = 50 x 9 m = 150 m.
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