A man in a train notices that he can count 21 telephone posts in one minute. If they are known to be 50 metres apart, then at what speed in the train travelling?

A. 55 km/hr

B. 57 km/hr

C. 60 km/hr

D. 63 km/hr

View Answer

1

Correct Answer :
60 km/hr

Explanation :
No Explanation available for this question

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