A train runs first half of the distance at 40 km/hr and the remaining half at 60

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โœช Choose the correct option.

A train runs first half of the distance at 40 km/hr and the remaining half at 60 km/hr. What is the average speed for the entire journey?

A. 28 Km/hr.
B. 52 Km/hr.
C. 48 Km/hr.
D. None of these

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