Question

Qual a taxa de juros simples mensal necessária para que um capital de R$ 20.000,00 produza um montante de R$ 26.000,00 após 20 meses

Answer 1

i=j*100/C/t

i=26000-20000*100/20000/20
i=6000*100/20000/20
i=600000/20000/20
i=30/20
i=1,5 % a.m.

Answer 2

i=j*100/Ct

i=26000-20000*100/20000/20
i=6000*100/20000/20
i=600000/20000/20
i=30/20
i=1,5
Resposta: 1,5%a.m.