A man in train notice that he can count 51 telephone posts in 1 minute. If they are known to be 60 meters apart,then at what speed is the train traveling?	Choose the correct choice from the following choices
A) 100km/hr B) 110km/hr C) 50km/hr D) 180km/hr E) 200km/hr
Number of gaps between 51 telephone posts = 50   180km/hristance traveled in 1 minute = 50*60= 
<gadget id="calculator">50*60</gadget>
<output>3_000</output>
3000m= 3km   Speed = 60*3= 
<gadget id="calculator">60*3</gadget>
<output>180</output>
180km/hr   Answer is 180km/hr
<result>D</result>
A man in train notice that he can count 51 telephone posts in 1 minute. If they are known to be 60 meters apart,then at what speed is the train traveling?