Respostas

2014-03-11T19:01:48-03:00
Use a regra de 3

100%--- 168. X=75,60
45% --- x

100% --- 220. X=99
45% --- x
2014-03-11T19:02:10-03:00
45 x 168 : 100 = 75,60
45 x 220 : 100 = 99