总成本=120*12.7+547.49=2071.49 每克成本=2071.49/(180*300+80*1040)=0.01509832361516 180g鸡爪每袋成本=0.01509832361516*180=2.72元 80g鸡爪每袋成本=0.01509832361516*80=1.21元
总成本=120*12.7+547.49=2071.49 每克成本=2071.49/(180*300+80*1040)=0.01509832361516 180g鸡爪每袋成本=0.01509832361516*180=2.72元 80g鸡爪每袋成本=0.01509832361516*80=1.21元