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?
Pick:
A) 46
B) 48
C) 50
D) 52
E) 54
<gadget id="calculator">10 / 36</gadget>
<output>5/18 = around 0.277778</output>

<gadget id="calculator">36 * (5/18)</gadget>
<output>10</output>

<gadget id="calculator">10 * 15</gadget>
<output>150</output>

<gadget id="calculator">150 + 370</gadget>
<output>520</output>

<gadget id="calculator">520 / 10</gadget>
<output>52</output>

<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?
divide(add(multiply(multiply(36, const_0_2778), 15), 370), multiply(36, const_0_2778))
"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 = 150 m . the time taken to pass the platform = ( 150 + 370 ) / 10 = 52 seconds the answer is d ."