A boy in a train notice that he can count 31 telephone posts in 60 seconds. The distance between two posts is 60 meters. Calculate the speed of the train?

A boy in a train notice that he can count 31 telephone posts in 60 sec

1.	A boy in a train notice that he can count 31 telephone posts in 60 seconds. The distance between two posts is 60 meters. Calculate the speed of the train?
A.	90 km/hr
B.	108 km/hr
C.	60 km/hr
D.	120 km/hr
Answer» C. 60 km/hr

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A boy in a train notice that he can count 31 telephone posts in 60 seconds. The distance between two posts is 60 meters. Calculate the speed of the train?

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