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(四)运输问题 某种产品有m个生产地,要供应n个需求地,如何制定一个调运方案,使总的运费最省,或运输速度最快。这类问题称为运输问题。 如某建筑公司下属A、B、C三个红砖厂,产量分别为6,000块、4,000块、10,000块。这三个砖厂的红砖可供应1号、2号、3号三个工地。工地需要量分别为5,000块、7,500块、7,500块。自各砖厂到工地的运价如表4—4所示。应该如何组织调运,可使总运费最省?
(D) transport problems Some products have m production sites, to supply n demand, how to develop a transport plan, so that the total freight the most provinces, or the fastest transport speed. Such problems are called transportation problems. Such as a construction company under the A, B, C three red brick factory, the output was 6,000, 4,000, 10,000. The three brick red brick can supply 1, 2, 3 three sites. Site requirements were 5,000, 7,500, 7,500. Table 4-4 shows the freight rates from brick factories to construction sites. How to organize transfer, the total shipping costs can be the most provinces?