24 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. The car completes the last part of its journey at an average speed of
90 km/h in 35 minutes. Find the average speed for its entire journey, giving your answer in km/h.
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Hi giues and thanks for free point
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