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3b + 2c = 235.000 |x1| 3b + 2c = 235.000 _
b = 45.000
2(45.000) + c = 140.000
c = 140.000 - 90.000 = 50.000
4b + 5c = 4(45.000) + 5(50.000) = 180.000 + 250.000 = 430.000