A train running at a speed of 36 kmph crosses an electric pole in 12 seconds. In how much time will it cross a 350 m long platform?  Answers
A) 18 min
B) 16 min
C) 19 min
D) 47 min
E) 12 min
Let the length of the train be x m.   When a train crosses an electric pole, the distance covered is its own length.   So, x = 12 * 36 * 5 /18= 
<gadget id="calculator">12 * 36 * 5 /18</gadget>
<output>120</output>
120 m.   Time taken to cross the platform= (120 +350)/ 36 * 5/18 = 47 min.   Answer:47 min
<result>D</result>
A train running at a speed of 36 kmph crosses an electric pole in 12 seconds. In how much time will it cross a 350 m long platform?