A train 800 m long can cross an electric pole in 20 sec and then find the speed of the train? Choose the correct choice:
A) 87 Kmph
B) 97 Kmph
C) 72 Kmph
D) 144 Kmph
E) 120 Kmph
Length = Speed * time   Speed = L/T   S = 800/20= 
<gadget id="calculator">800/20</gadget>
<output>40</output>
40 M/Sec   Speed= 40 *18/5 (To convert M/Sec in to Kmph multiply by 18/5)   Speed = 144 Kmph   Answer: 144 Kmph
<result>D</result>
A train 800 m long can cross an electric pole in 20 sec and then find the speed of the train?