Bonjour,
fondant:
300/200 = 3/2
600/400 = 6/4 =3/2
150/100 = 3/2
80O/500 = 8/5
donc on le supprime
Vélo:
1h = 4*15mn
1) 20km/h
20/4 = 5km/h
2) 5km/h
3) 50/ 10
5km/h
4) 70/13
=>5,38km/h
Non proportionnel, on le supprime
