A train running at the speed of 72 km/hr crosses a pole in 9 seconds. What is the length of the train?  Choose the most appropriate option.
A) 286  B) 278  C) 255  D) 180  E) 287
Speed=(72 * 5/18) m/sec = (20) m/sec Length of the train   = (Speed x Time) = (20 * 9)= 
<gadget id="calculator">(20 * 9)</gadget>
<output>180</output>
180 m.   Answer:180
<result>D</result>
A train running at the speed of 72 km/hr crosses a pole in 9 seconds. What is the length of the train?