Question

qual a taxa mensal simples de desconto racional utilizada numa operaçao a 120 dias cujo valor nominal e de 1.000,00 e o valor liquido de 880,00

Answer 1

i=1000-880*100/1000/120*30
i=120*100/1000/120*30
i=12000/1000/120*30
i=12/120*30
i=0,1*30
i=3
Resposta: Taxa de 3%a.m.