Mathematics, 17.09.2021 23:30 katiepotter

a car travels the first 50 km of its journey at an average speed of 25 m/s and the next 120 km at an average speed of 80 km/h. find the average speed for its entire journey, giving your answer in km/h.

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a car travels the first 50 km of its journey at an average speed of 25 m/s and the next 120 km at an...

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