Question

a que taxa capital de 8000, rende 2400 em 6 meses?

Answer 1

C=8000
j=2400
t=6 meses   
i=?
I=100.j/c.t    i=100.2400/8000.6      i=240.000/48.000=5
reposta:5%

Answer 2

2400=8000 i.6
48000i = 2400
i=2400/48000
i=24/480
i=0,05=5/100=5%