Question

Um capital de R$ 16.000,00,aplicado durante 8 meses,rendeu de juros R$ 1.920,00.Determine a taxa mensal.

Answer 1

i=j*100/C/t

i=1920*100/16000/8
i=192000/16000/8
i=12/8
i=1,5
Resposta: 1,5%a.m.

Answer 2

J = C * i * n
J = 1920
C = 16000
n = 8 meses
i = ?

1920 = 16000 * i * 8
1920 = 128000 i
i = 0,015 ou 1,5% a.m.