A train 110 m long is running with a speed of 40 km/h. In how many seconds will the train pass a man who is running at 4 km/h in the direction opposite to that in which the train is going? Choose one
A) 6  B) 7  C) 8  D) 9  E) 10
The speed of the train relative to the man = 40 + 4= 
<gadget id="calculator">40 + 4</gadget>
<output>44</output>
44 km/h.   44000 m/h * 1h/3600 s= (440/36) m/s   (110 m) / (440/36 m/s) = (110 * 36) / 440 = 36/4= 
<gadget id="calculator">36/4</gadget>
<output>9</output>
9 seconds   The answer is 9.
<result>D</result>
A train 110 m long is running with a speed of 40 km/h. In how many seconds will the train pass a man who is running at 4 km/h in the direction opposite to that in which the train is going?