Question

Calcular o capital que rende de juros R$4.200.00 á taxa de 3,5% a.m. durante 8 meses .

Answer 1

J=C. I. T÷2
4.200=C. 3, 5. 8
4. 200=C. 28, 0
C =4. 200÷28, 0
C= 150

Answer 2

C=j*100/i/t

C=4200*100/3,5/8

C=420000/3,5/8

C=120000/8

C=15000

Resposta: Capital de R$15.000,00