A train 120 m long passes a man,running at 6 kmph in the direction opposite to that of the train,in 6 seconds.The speed of the train is
Select the correct option.
A) 54 kmph  B) 60 kmph  C) 66 kmph  D) 72 kmph  E) 82 kmph
speed of train relative to man: 120/6 * 18/5 km/hr   = 72 km/hr   let speed of train= x   therefore x+6 = 72   x= 72-6= 
<gadget id="calculator">72-6</gadget>
<output>66</output>
66 km/hr   ANSWER:66 kmph
<result>C</result>
A train 120 m long passes a man,running at 6 kmph in the direction opposite to that of the train,in 6 seconds.The speed of the train is