Respostas

2014-02-02T19:00:50-02:00
8,50 
0.50 x 60 = 30
8:30
16,30
0.30 x 60 = 18
16:18 min
21,52
0.52 x 60 = 31,2
0.20 x 60 = 12
21:31min 12 seg