Respostas

2014-04-16T22:10:26-03:00
Regra de três simples
271-------100%
230-------x
271x =23000    =>     x=23000/271   x=84,87 %
271-------100%
29-------x
271x =2900    =>     x=2900/271    x=10,7 %
271-------100%
12-------x
271x =1200    =>     x=1200/271 x=4,43%
84,87+10,7+4,43=100%
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