A train running at a speed of 36 km/h passes an electric pole in 15 seconds. In how many seconds will the whole train pass a 370-meter long platform?  Choose the correct choice from the following answers.
A) 46  B) 48  C) 50  D) 52  E) 54
Let the length of the train be x meters.   When a train crosses an electric pole, the distance covered is its own length x.   speed = 36 km/h = 36000 m / 3600 s = 10 m/s   x = 15 * 10= 
<gadget id="calculator">15 * 10</gadget>
<output>150</output>
150 m.   The time taken to pass the platform= (150 +370)/ 10= 
<gadget id="calculator">(150 +370)/ 10</gadget>
<output>52</output>
52 seconds   The answer is 52.
<result>D</result>
A train running at a speed of 36 km/h passes an electric pole in 15 seconds. In how many seconds will the whole train pass a 370-meter long platform?