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What is your average velocity if you drive a distance of 150 km at a speed of 40 km/h,then the same distance at a speed of 60 km/h? Answer in units of km/h
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Fangju Fangju
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150/40=3.75h, 150/60=2.5h, 150*2/(3.75+2.5)=48 km/h.
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