28 mn 54 s + 29mn 12 s +27mn 58s +28mn 1 s exprimer en heures minutes et secondes Svp Merci
Mathématiques
domdom94320
Question
28 mn 54 s + 29mn 12 s +27mn 58s +28mn 1 s exprimer en heures minutes et secondes Svp Merci
1 Réponse
-
1. Réponse pierremurt
28 mn 54 s + 29mn 12 s +27mn 58s +28mn 1 s
= 112 min 125s
125sec = 60s + 60s+5s=2min 5s
soit 112 min 125s = 114min 5 s
et 114min=60min+54min=1h 54min
donc 28 mn 54 s + 29mn 12 s +27mn 58s +28mn 1 s = 1h54min5s