A man travels 1 hours of the journey at a speed of 10 km/hr and remaining 4 hours of the journey at 70 km/hr. What is the average speed (in km/hr) of the entire journey?

A man travels 1 hours of the journey at a speed of 10 km/hr and remain

1.	A man travels 1 hours of the journey at a speed of 10 km/hr and remaining 4 hours of the journey at 70 km/hr. What is the average speed (in km/hr) of the entire journey?
A.	55
B.	58
C.	56
D.	57
Answer» C. 56

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A man travels 1 hours of the journey at a speed of 10 km/hr and remaining 4 hours of the journey at 70 km/hr. What is the average speed (in km/hr) of the entire journey?

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