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【例题38·计算题】某生产企业使用A零件,可以外购,也可以自制。如果外购,单价4元,一次订货成本10元;如果自制,单位生产成本3元,每次生产准备成本600元。每日产量50件。零件的全年需求量为3 600件,变动储存成本为零件价值的20%,每日平均需求为10件。要求:分别计算零件外购和自制的经济订货批量和相关总成本,以选择较优的方案。(1)外购零件(2)自制零件由于自制的总成本(12240元)低
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