Respostas

2014-08-09T20:07:24-03:00
40% de 80,00=
80,00 × 40 = 3.200,00
3.200,00 ÷ 100 = 32,00
2014-08-09T20:22:35-03:00
80......100%
x........40%
100x=3200
x=3200/100
x=32