Bonjour, pouvez-vous m'aider? Exemple : 10 m/s = 10mx60/1sx60 = 600m/60s = 600m/1min = 600 m/min

a) 0,3 km/min en m/s
b) 500 m/min en km/h
c) 60 km/h en m/min

Merci d'avance et bonne soirée à vous !​
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