A travels 20 km with a speed of 40 km/hr. He travels another 45 km with a speed of 15 km/hr. what is his average speed for the entire journey?

A travels 20 km with a speed of 40 km/hr. He travels another 45 km wit

1.	A travels 20 km with a speed of 40 km/hr. He travels another 45 km with a speed of 15 km/hr. what is his average speed for the entire journey?
A.	16 km/hr.
B.	22 km/hr.
C.	18.5 km/hr.
D.	21.3 km/hr.
Answer» D. 21.3 km/hr.

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A travels 20 km with a speed of 40 km/hr. He travels another 45 km with a speed of 15 km/hr. what is his average speed for the entire journey?

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