Question

A que taxa o capital de R$ 8,000 rende R$ 2,400 reais em 6 meses ?

Answer 1

J= C i t

J= 2400
C= 8000
i= taxa ?
t= 6 meses

2400= 8000 • i • 6
48000i= 24000

i= 20%

Answer 2

$J = \frac{C*i*T}{100}\\\\ J = 2400,00\:Reais;;\\ C = 8000,00\:Reais; \\ i = ?\\ t = 6 meses\\\\ 2400 = \frac{800 *i*6}{100}\\\\ 2400 = \frac{ 48000 * i }{100}\\\\ 2400 = 480 * i\\\\ i = \frac{ 2400 }{480}\\\\ i = 5 \: Porcento$