Va rog problema 2. Multumesc!

a) t3 - t2 = 5 min 40 s
b) t2-t1 + t4 - t3 sau t4 - t1 - (t3-t2) = 4h 15 min 35 s - 5 min 40 s = 4 h 14 min 95 s - 5 min 40 s = 4 h 9 min 55 s