A train overtakes two persons who are walking in the same direction in which the train is going, at the rate of 2 kmph and 4 kmph and passes them completely in 9 and 10 seconds respectively. The length of the train is:
A.45 m
B.50 m
C.54 m
D.72 m
A.45 m
B.50 m
C.54 m
D.72 m
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