A man in train notice that he can count 51 telephone posts in 1 minute. If they are known to be 70 meters apart,then at what speed is the train traveling?	Choose the correct choice from the following options:
A) 100km/hr
B) 110km/hr
C) 50km/hr
D) 150km/hr
E) 210km/hr
Number of gaps between 51 telephone posts = 50   Distance traveled in 1 minute = 50*70= 
<gadget id="calculator">50*70</gadget>
<output>3_500</output>
3500m= 3.5km   Speed = 60*3.5= 
<gadget id="calculator">60*3.5</gadget>
<output>210</output>
210km/hr   Answer is 210km/hr
<result>E</result>
A man in train notice that he can count 51 telephone posts in 1 minute. If they are known to be 70 meters apart,then at what speed is the train traveling?