Bonjour,
Convertir en secondes:
1 mn= 60 s
1 h= 360 mn= 3 600 s
25 mn 12 s= 25x60+12= 1 512 s
5 h 39 mn 36 s = 5x3 600+39x60+36= 18 000+2 340+36= 20 376
Convertir en h, mn , s:
1.64 h=1 h+0.64 h= 1h+(0.64x1h)=1h+(0.64x60)=1h+38.4mn=1h+38 mn+(0.4x60)
= 7h38 mn 24s
2.415h= 2h+ (0.415x60)= 2h+24.9mn= 2h+ 24 mn+ (0.9x60)= 2h+24 mn +54s
