1. A train overtakes two persons walking along a railway track. The first one walks at 4.5 km/hr. The other one walks at 5.4 km/hr. The train needs 8.4 and 8.5 seconds respectively to overtake them. What is the speed of the train if both the persons are walking in the same direction as the train?
66 km/hr
72 km/hr
78 km/hr
81 km/hr
EXPLANATION
D
2. What is the speed of the train?
I. The train crosses a signal pole in 18 seconds.
II. The train crosses a platform of equal length in 36 seconds.
III. Length of the train is 330 metres.
I and II only
II and III only
I and III only
III and either I or II only
EXPLANATION
D
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