1.

A train overtake two persons walking along a railway track. The first one walks at 4.5 km/h and the other one walks at 5.4 km/h. The train needs 8.4 s and 8.5 s respectively , to overtake them. What is the speed of the train, if both the persons are walking in the same direction as the train ?

A. 66 kkm/h
B. 72 km/h
C. 78 km/h
D. 81 km/h
Answer» E.


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