MATHEMATICAL MODEL OF RICE COMMODITY SUPPLY CHAIN IN INDONESIA

Food is the main need for every individual that must always be fulfilled. For Indonesia, food identified with rice because this type of a commodity consumed by Indonesian population. Therefore, crisis can interrupt economic resilience and national stability. National consumption from year to will continue increase in line Indonesia's Although, Indonesia third-largest country world producing most, still depends on imports. This was done government maintain supply.The supply chain has not been optimum, as indicated relatively small profits producer. In research, we construct maximum profit model direct indirect media sales producer, distributor, retailer. And then, determine optimum solution analysis factors affect it. The results showed changes proportion demand greatly affects resulting optimal profit.