A train 400 m long can cross an electric pole in 20 sec and then find the speed of the train?	Choose the correct choice from the following answers:  A) 65 Kmph  B) 70 Kmph  C) 72 Kmph  D) 75 Kmph  E) 73 Kmph
Explanation:   Length = Speed * time   Speed = L/T   S = 400/20= 
<gadget id="calculator">400/20</gadget>
<output>20</output>
20 M/Sec   Speed= 20*18/5 (To convert M/Sec in to Kmph multiply by 18/5)   Speed = 72 Kmph   ANSWER IS 72 Kmph
<result>C</result>
A train 400 m long can cross an electric pole in 20 sec and then find the speed of the train?