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jennnnoma
@jennnnoma
June 2021
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Exercice 1 :
Un passioné d'aviron rame à une cadence moyenne de 45 coups de rame par mintute.
a) Calculer sa cadence en nombre de coups de rame par heure.
b) En combien de temps donne-t-il 1000 coups de rame ? Arrondir le résultat à la seconde.
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winner123
Verified answer
Bonsoir
45 coups de rame en 1 minute = 45 x 60 = 2 700 coups à l'heure.
2700 coups en 60 minutes
1000 coups en x minutes
2700 x = 60 x 1000
2700x = 60000
x = 22.22222
22 minutes et 22 secondes
3 votes
Thanks 5
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Verified answer
Bonsoir45 coups de rame en 1 minute = 45 x 60 = 2 700 coups à l'heure.
2700 coups en 60 minutes
1000 coups en x minutes
2700 x = 60 x 1000
2700x = 60000
x = 22.22222
22 minutes et 22 secondes