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3b + 2c = 235.000
4b + 2c = 280.000
3b + 2c = 235.000
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b = 45.000 x 4 = 180.000
2(45.000) + 1c = 140.000
90.000 + 1c = 140.000
c = 50.000 x 5 = 250.000
250.000 + 180.000 = 430.000
:D :)