Question

Um capital de R$ 28.000,00 aplicado durante oito meses rendeu juros de $11.200,00.determine a taxa de juros simples mensal?

Answer 1

i=j*100/C/t

i=11200*100/28000/8
i=1120000/28000/8
i=40/8
i=5
Resposta: Taxa de 5%a.m.