A man in train notice that he can count 51 telephone posts in 1 minute. If they are known to be 80 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) 240km/hr  D) 150km/hr  E) 200km/hr
Number of gaps between 51 telephone posts = 50   Distance traveled in 1 minute = 50*80= 
<gadget id="calculator">50*80</gadget>
<output>4_000</output>
4000m= 4km   Speed = 60*4= 
<gadget id="calculator">60*4</gadget>
<output>240</output>
240km/hr   Answer is 240km/hr
<result>C</result>
A man in train notice that he can count 51 telephone posts in 1 minute. If they are known to be 80 meters apart,then at what speed is the train traveling?