Bonjour,
Anne
1h15 ->90km
75mn -> 90km
1mn -> 90/75
60mn -> (90*60) / 75 =>72km/h
Ben
15m/s
15*60/mn
15*60*60/ h -> ..m/h = ....km/h
Clem
15mn -> 14km
1mn -> 14/15
60mn - > (14*60)/15 -> ?..km/h
Dounia
8s -> 200m
1s -> 200/8
3600s -> (200*3600)/ 8 -> ...m /h -> ....km/ h
Emmy
1mn -> 1,3km
60mn -> 1,3 *60 -> ....km/h
à toi pour la suite et les calculs
