Respostas

2014-04-16T14:11:24-03:00
J = C .i.T

j ~> juros
C~> capital aplicado
i ~> taxa
t ~> tempo

3000 = 40000 .i.3

3 = 120 .i

i =  \frac{3}{120} = 0,025

0,025 = 2,5%

1 3 1