The figure below shows the nodes (A-I) and capacities (labelled on arcs in packages/day) of a shipping network. The firm would like to know how many packages per day can flow from node A to node I. 
Note: This question requires Solver.
Formulate the problem in Solver and find the optimal solution. At maximum capacity, what will be the flow between nodes B and E?
Definitions:
Perfect Competitor
A theoretical market structure in which many firms sell identical products, entry and exit are free, and no single buyer or seller can influence the market price.
Economic Profit
The difference between a firm's total revenue and its total costs, including both explicit and opportunity costs.
Average Total Cost
The total cost of production (fixed and variable costs combined) divided by the number of units produced, indicating the cost per unit.
Perfectly Competitive Industry
A theoretical market structure characterized by unlimited buyers and sellers, homogeneity of products, and no barriers to entry or exit, leading to optimal pricing and efficiency.
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