Respostas

2014-04-02T17:27:24-03:00
100% = total.
40%= meninas = 60 meninas.
60%= meninos = 40 meninas.
2014-04-02T17:30:06-03:00
100----------100%
x-------------40%

100x=4000
x=4000  =40meninaas   e 60 meninos
     100
1 1 1