1% interest 4000 1 21.7 4000 3 21.7 4000 5 21.7 4000 7 21.7 4000 9 21.7 4000 11 21.7 20% interest Principal: 4000 Month: 1 interest: 446.46 Principal: 3629.46 Month: 2 interest: 446.46 Principal: 3258.92 Month: 3 interest: 446.46 Principal: 2888.39 Month: 4 interest: 446.46 Principal: 2517.85 Month: 5 interest: 446.46 Principal: 2147.31 Month: 6 interest: 446.46 Principal: 1776.77 Month: 7 interest: 446.46 Principal: 1406.23 Month: 8 interest: 446.46 Principal: 1035.7 Month: 9 interest: 446.46 Principal: 665.16 Month: 10 interest: 446.46 Principal: 294.62 Month: 11 interest: 446.46