Respostas

2013-11-19T16:28:40-02:00
50 kg - 40 gostas
70 kg - x de gotas
Multiplica cruzado.
50x= 2800
x=2800/50
x= 56 gotas
2013-11-19T16:29:35-02:00
50.............40
70...............x

5x = 7.40
5x = 280
x = 280/5
x = 56 --> 56 gotas