Răspuns :
de la 11:10 la 12:00
12:00 - 11:10 = 50 min.
de la 12:05 la 12:00
12:05 - 12:00 = 5 min
50 + 5 = 55 min
12:00 - 11:10 = 50 min.
de la 12:05 la 12:00
12:05 - 12:00 = 5 min
50 + 5 = 55 min