A train 110 m long is running with a speed of 80 km/h. In how many seconds will the train pass a man who is running at 8 km/h in the direction opposite to that in which the train is going?
Choose the correct answer:  A) 3.5  B) 4.5  C) 5.5  D) 6.5  E) 7.5
The speed of the train relative to the man = 80 + 8= 
<gadget id="calculator">80 + 8</gadget>
<output>88</output>
88 km/h.   88000 m/h * 1h/3600 s= (880/36) m/s   (110 m) / (880/36 m/s) = (110 * 36) / 880 = 36/8= 
<gadget id="calculator">36/8</gadget>
<output>9/2 = around 4.5</output>
4.5 seconds   The answer is 4.5.
<result>B</result>
A train 110 m long is running with a speed of 80 km/h. In how many seconds will the train pass a man who is running at 8 km/h in the direction opposite to that in which the train is going?