Question

Um capital aplicado a juros simples, à taxa de 2,5% ao mês, triplica em

Answer 1

$> resolucao \\ \\ \geqslant juros \: \: simples \\ \\ \\ j = \frac{c \times i \times t}{100} \\ \\ 2c = \frac{c \times 2.5 \times t}{100} \\ \\ \frac{2c}{c} = \frac{2.5 \times t}{100} \\ \\ 2 = \frac{2.5 \times t}{100} \\ \\ 2.5t = 200 \\ \\ t = \frac{200}{2.5} \\ \\ t = 80 \\ \\ \\ resposta \: > \: \: 80 \: \: meses \\ \\ \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant \geqslant \geqslant$