Resposta:  R$8.480,00

Explicação passo a passo:

Juros simples

M=C*i/100*t+C

M=8000*12/100/12*6+8000

M=96000/100/12*6+8000

M=960/12*6+8000

M=80*6+8000

M=480+8000

M=8480

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