Répondre :
1) 2h5 mn + 47 mn 120 s
=2h 52 min 120 sec
=2h 54 min
=2,9 h
2) 9h10 mn 15 s + 7h30 5 s
=9h 10 min 15 sec + 7h 30 min 5 sec
=16h 40 min 20 sec
=16,67222 h
convertir 1) 2h5 mn + 47 mn 120 s = 2) 9h10 mn 15 s + 7h30 5 s =
1) 2h5 mn + 47 mn 120 s
=2h 52 min 120 sec
=2h 54 min
=2,9 h
2) 9h10 mn 15 s + 7h30 5 s
=9h 10 min 15 sec + 7h 30 min 5 sec
=16h 40 min 20 sec
=16,67222 h