A train running at a speed of 36 kmph crosses an electric pole in 12 seconds. In how much time will it cross a 370 m long platform? Select:
A) 19
B) 27
C) 29
D) 47
E) 49
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 +370)/ 36 * 5/18   = 49 min.   Answer:49
<result>E</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 370 m long platform?