A person travels three equal distances at a speed of x km/h, y km/h and z km/h respectively. What is the average speed for the whole journey?

A person travels three equal distances at a speed of x km/h, y km/h an

1.	A person travels three equal distances at a speed of x km/h, y km/h and z km/h respectively. What is the average speed for the whole journey?
A.	xyz/(xy + yz + zx) km/h
B.	(xy + yz + zx)/Xyz km/h
C.	3xyz/(xy + yz + zx) km/h
D.	xyz/3 (3x + yz + zx) km/h
Answer» D. xyz/3 (3x + yz + zx) km/h

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A person travels three equal distances at a speed of x km/h, y km/h and z km/h respectively. What is the average speed for the whole journey?

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