A person covered 50% of a certain distance at 2 km/h, 25% of the distance at 4 km/h and the remaining distance at 8 km/h. His average speed (in km/h) for the entire journey was:

A person covered 50% of a certain distance at 2 km/h, 25% of the dista

1.	A person covered 50% of a certain distance at 2 km/h, 25% of the distance at 4 km/h and the remaining distance at 8 km/h. His average speed (in km/h) for the entire journey was:
A.	32/13
B.	16/3
C.	32/11
D.	14/3
Answer» D. 14/3

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A person covered 50% of a certain distance at 2 km/h, 25% of the distance at 4 km/h and the remaining distance at 8 km/h. His average speed (in km/h) for the entire journey was:

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