How much time will a 420 m long train take to cross a man walking w – McqOptions

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1.	How much time will a 420 m long train take to cross a man walking with a speed of 6 km/h in the direction of the moving train, if the speed of the train 42 km/hr?
A.	42 sec
B.	30 sec
C.	35 sec
D.	45 sec
Answer» B. 30 sec

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