Question

um capital de R$16,000,00 aplicando durante 8 meses rendeu um juros de R$1920,00 determine a taxa anual

Answer 1

Juros simples

$J=Cit\\\\ J=juros\\ C=capital\\ i=taxa\\ t=tempo$

t= 8 meses = 2/3 do ano

$1920=16000*i*\frac{2}{3}\\\\ 1920*3=32000i\\\\ 5760=32000i\\\\ i=\frac{5760}{32000}\\\\ \boxed{i=0,18\rightarrow\ 18\%\ a.a.}$

Answer 2

Resposta:  18%a.a.

Explicação passo a passo:

Juros simples

i=j*100/C/t

i=1920*100/16000/8*12

i=192000/16000/8*12

i=12/8*12

i=1,5*12

i=18