Salut ! :)
1 h = 60 min
1 min = 60 s
70 :
111 min = 60 min + 51 min = 1 h 51 min
131 min = 60 min + 60 min + 11 min = 2 h 11 min
71 :
67 s = 60 s + 7 s = 1 min 7 s
123 s = 60 s + 60 s + 3 s = 2 min 3 s
72 : ATTENTION : 0.5 h = 30 min et 0.5 min = 30 s
3.5 h = 3 h 30 min
2.5 min = 2 min 30 s
