Răspuns:
(29h 10 min 56s ):7= 4h 10min 8s
29 h = 29 × 60 = 1740 min
1740 + 10 = 1750 min
1750 × 60 = 105000 s
105000 + 56 = 105056 s
105056 : 7 = 15008 s
15008 : 60 = 250 min 8 s
250 : 60 = 4 h 10 min
(9h 43 min 2s) :2= 4h 51min 31 s
9×60 = 540 min
540 + 43 = 583 min
583×60 = 34980 s
34980 + 2 = 34982 s
34982 : 2 = 17491 s
17491 : 60 = 291 min 31s
291 : 60 = 4 h 51 min
(42h 31 min 36s) :6= 7h 5 min 16s
42×60 = 2520 min
2520 + 31 = 2551 min
2551 × 60 = 153060 s
153060 + 36 = 153096 s
153096 : 6 = 25516 s
25516 : 60 = 425 min 16s
425 : 60 = 7 h 5 min
(35h 23 min 52s) :4= 8h 50min 58s
35 ×60 = 2100 min
2100 + 23 = 2123 min
2123 ×60 = 127380 s
127380 + 52 = 127432 s
127432 : 4 = 31858 s
31858 : 60 = 530 min 58s
530 : 60 = 8h 50min
