La droite est graduée de 0.1 en 0.1
Yannick = 19.2 min
Brian = 19.2 + 0.15 = 19.35 min
Mélanie = 19.2 + 0.35 = 19.55 min
Chloé = 19.55 + 0.25 = 20.80 min = 21.20 mln
Jérémie = 21.20 + 0.6 = 21.26 min
Ikram = 19.9 min
Alice = 19.9 - 0.1 = 19.8 min
19.2 < 19.35 < 19.55 < 19.8 < 19.9 < 21.2 < 21.26