A train 140 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 Answers:  A) 54 kmph  B) 60 kmph  C) 66 kmph  D) 72 kmph  E) 78 kmph
speed of train relative to man: 140/6 * 18/5 km/hr   = 84 km/hr   let speed of train= x   therefore x+6 = 84   x= 84-6= 
<gadget id="calculator">84-6</gadget>
<output>78</output>
78 km/hr   ANSW78 kmphR:78 kmph
<result>E</result>
A train 140 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