Question

7) Ao investir um capital de R$ 5.800,00 sob
o regime de juros simples durante 4 meses, o
montante acumulado atinge o valor de
R$ 6.380,00. Qual a taxa de juros utilizada
nesse investimento?

Answer 1

$> resolucao \\ \\ \geqslant \: juros \: \: simples \\ \\ m = 6.380.00 \\ c = 5.800.00 \\ j > m - c > 6380 - 5800 = 580 \\ t = 4 \: meses \\ \\ \\ j = \frac{c \times i \times t}{100} \\ \\ 580 = \frac{5800 \times i \times 4}{100} \\ \\ 580 = 58 \times i \times 4 \\ \\ 580 = 232 \times i \\ \\ i = \frac{580}{232} \\ \\ i = 2.5 \\ \\ \\ resposta \: \: > \: \: taxa \: \: de \: \: 2.5\%a.m \\ \\ \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant \geqslant \geqslant$