Question

emprestei a quantia de 400 pelo prazo de 3 meses a 3% a.m quanto receberei de juros?

Answer 1

$J= \frac{C\cdot i\cdot t}{100} \\\\J= \frac{400\cdot3\cdot3}{100} \\\\J= \frac{3600}{100} \\\\\boxed{\boxed{J=R\ \: 36,00}}$

Answer 2

j=C*i/100*t

j=400*3/100*3
j=1200/100*3
j=12*3
j=36
Resposta: Receberá de juros R$36,00