a car travels the first 15 km at the uniform speed of 30 km / hour, the next 75 km at a uniform speed of 50 km/hour and the last 10 km at a uniform speed of 20 km / hour calculate the average speed for the entire journey(plz do this question on note book then send plz)
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Answer:
30+50+20=100÷3
=33.33 km/h
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