Bonjour,
1mn 6s = 66s
1mn 10s = 70s
1mn 17s = 77s
on cherche le plus petit multiple commun:
77, 154, 231 , 308, 385, 462, 539, 616, 693, 770, 847, 924, 1001, 1078, 1155, 1232, 1309, 1386, 1463, 1540, 1617, 1694, 1171, 1848, 1925, 2002, 2079, 2156, 2233, 2310
2310/66 =35
2310/70 =33
Donc au bout de 2 310s
2310/ 60 =38mn et 30s
