Respostas

2013-09-18T15:36:54-03:00
1h --------------- 60min
 x ---------------- 12min

60x = 120
x = 12/60
x = 0,2h
4 5 4
2013-09-18T15:40:14-03:00
1 hra = 60 min
12 hras = 720 min
2 2 2