Répondre :
bonjour
2 h 42 min 54 s = 2 h + 42/60 + 54 / 3600 = 2.715 h
8 h 24 min = 8 h + 24/60 = 8.4 h
6 h 36 min = 6 h + 36 /60 = 6.36 h
3 h 12 min = 3 h + 12/60 = 3.2 h
24 min 36 s = 24 + 36 /60 = 24.36 min
bon dimanche
bonjour
2 h 42 min 54 s = 2 h + 42/60 + 54 / 3600 = 2.715 h
8 h 24 min = 8 h + 24/60 = 8.4 h
6 h 36 min = 6 h + 36 /60 = 6.36 h
3 h 12 min = 3 h + 12/60 = 3.2 h
24 min 36 s = 24 + 36 /60 = 24.36 min
bon dimanche