6!. An enterprise X plant is a manufacturer of A chemical product, which is distributed to W1 and W2 enterprise regional warehouses supplying local customers. Initial inventory on hand is: W1 - 120 items, W2 75 items. Safety stock is: W1 - 15 items, W2 - 10 items. Minimum delivery is: to W1 - 50 items, to W2 - 50 items. Lead time of delivery is: for W1 - 1 day, for W2 - 2 days. It is also expected to receive a delivery of 100 items of A product to W2 warehouse in day no 2. For the customers' demand forecasts (Table 7, 8) and data on initial logistics system state, make a DRP schedule (plan) for 1 week of distribution system for the A product from X enterprise to W1 and W2 (Table 9, 10). (5 pts) Table 7. Gross needs for A product in W1 Table 8. Gross needs for A product in W2 W1 gross needs in day W2 gross needs in day 1 2 3 4 5 2 3 4 5 1 35 W1 95 70 55 65 50 W2 25 30 20 35 Table 9. DRP for W1 Table 10. DRP for W2 W1 W2 Day Day 3 2 4 1 2 3 4 5 Gross needs Gross needs Scheduled delivery Scheduled delivery Inventory I Net needs Inventory Net needs Planned orders Planned orders Calculations: ... 7!. A commercial company with warehouses at locations W1, W2 must meet customers' demands at locations C1, C2. The following table (Table 11) presents data relevant to weekly distribution problem (transportation cost, demand and supply). Formulate a linear programming model to solve this problem. As a decision variable use Xij as a transportation volume from / warehouse (i = 1, 2) to j customer (j = 1, 2). Example: X1,2 is a distribution volume in transportation from W1 warehouse to C2 customer. (5 pts) Table 11. Demand, supply and transportation cost. Cost From/To C2 C1 Supply 150 7 2 W1 W2 12 4 250 Demand 200 200 Objective function: ... Constraints: ... Calculations: ... 1 5 6!. An enterprise X plant is a manufacturer of A chemical product, which is distributed to W1 and W2 enterprise regional warehouses supplying local customers. Initial inventory on hand is: W1 - 120 items, W2 75 items. Safety stock is: W1 - 15 items, W2 - 10 items. Minimum delivery is: to W1 - 50 items, to W2 - 50 items. Lead time of delivery is: for W1 - 1 day, for W2 - 2 days. It is also expected to receive a delivery of 100 items of A product to W2 warehouse in day no 2. For the customers' demand forecasts (Table 7, 8) and data on initial logistics system state, make a DRP schedule (plan) for 1 week of distribution system for the A product from X enterprise to W1 and W2 (Table 9, 10). (5 pts) Table 7. Gross needs for A product in W1 Table 8. Gross needs for A product in W2 W1 gross needs in day W2 gross needs in day 1 2 3 4 5 2 3 4 5 1 35 W1 95 70 55 65 50 W2 25 30 20 35 Table 9. DRP for W1 Table 10. DRP for W2 W1 W2 Day Day 3 2 4 1 2 3 4 5 Gross needs Gross needs Scheduled delivery Scheduled delivery Inventory I Net needs Inventory Net needs Planned orders Planned orders Calculations: ... 7!. A commercial company with warehouses at locations W1, W2 must meet customers' demands at locations C1, C2. The following table (Table 11) presents data relevant to weekly distribution problem (transportation cost, demand and supply). Formulate a linear programming model to solve this problem. As a decision variable use Xij as a transportation volume from / warehouse (i = 1, 2) to j customer (j = 1, 2). Example: X1,2 is a distribution volume in transportation from W1 warehouse to C2 customer. (5 pts) Table 11. Demand, supply and transportation cost. Cost From/To C2 C1 Supply 150 7 2 W1 W2 12 4 250 Demand 200 200 Objective function: ... Constraints: ... Calculations: ... 1 5
