A train 180 m long is running with a speed of 60 km/hr. In what time will it pass a man who is running at 6 km/hr in the direction opposite to that in which the train is going?  Choices
A) 7 B) 10 C) 8 D) 2 E) 4
Speed of train relative to man = 60 + 6= 
<gadget id="calculator">60 + 6</gadget>
<output>66</output>
66 km/hr.= 66 * 5/18 = 55/3 m/sec.   Time taken to pass the men = 180 * 3/55   = 10 sec.   Answer 10
<result>B</result>
A train 180 m long is running with a speed of 60 km/hr. In what time will it pass a man who is running at 6 km/hr in the direction opposite to that in which the train is going?