Respostas

2014-07-15T14:12:44-03:00
3*4 = 12%
20.000,00 ------ 100%
x ----------- 12%
x = 12*20000/100
x = 2.400 reais
1 1 1
2014-07-15T14:16:54-03:00
J=(c.i.n)

J=
C=20.000
I=4/100a.a
N=3

J=20.000x 4/100x3

J=2.400.00