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A train 110 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
a)54 kmph b)60 kmph c)66 kmph d)72 kmph
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- Ans is 60 km/h
speed of train relative to man: 110/6 * 18/5 km/hr
= 66 km/hr
let speed of train= x
therefore x+6 = 66
x= 66-6
x=60 km/hr Ans - 12 years agoHelpfull: Yes(0) No(0)
- answer is b) 60 kmph
solution is:-
speed of train relative to man i,e. combined speed of train and man=110/6 * 18/5=66 kmph
let speed of train individually= x kmph
and speed of man individually= 6kmph
so. x+6=66
so, x=60 kmph
or in other way,
combined speed of train and man=110/6 * 18/5=66 kmph
speed of man=6 kmph
therefore, speed of train=66-6=60 kmph - 7 years agoHelpfull: Yes(0) No(0)
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