A man travelled four equal distances of 3 km at speeds of 10, 20, 30 and 40 km/hr respectively. What is his average speed (in km/hr)?

A man travelled four equal distances of 3 km at speeds of 10, 20, 30 a

1.	A man travelled four equal distances of 3 km at speeds of 10, 20, 30 and 40 km/hr respectively. What is his average speed (in km/hr)?
A.	14
B.	19.2
C.	22.8
D.	16.8
Answer» C. 22.8

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A man travelled four equal distances of 3 km at speeds of 10, 20, 30 and 40 km/hr respectively. What is his average speed (in km/hr)?

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