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corine972
@corine972
June 2021
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Fred part de la ferme des Essarts à 9h15 pour une randonnée à skis de fond. Il se rend au col de l'Ours, puis rejoint Dimitri à 12h30 au foyer de fond. Sachant qu'il a parcouru 10 km, quelle est sa vitesse moyenne sur l'ensemble du parcours ?
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winner123
Verified answer
Vitesse = distance / temps
distance = 10 lm
temps = 12h30 - 9h15 = 3h 15 minutes soit 3,25
temps = 10 : 3.25 = 3,07 km/h
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Verified answer
Vitesse = distance / tempsdistance = 10 lm
temps = 12h30 - 9h15 = 3h 15 minutes soit 3,25
temps = 10 : 3.25 = 3,07 km/h