The table below shows the shipping costs, supplies, and demands associated with a transportation problem. All the demands must be met but not all the supplies at 1 and 3 need be used. All the supply at warehouse 2 must be shipped. 

Unit Shipping Costs from Warehouses to Customers

   
Customer 
   
Supply 
 
13 
20 
Warehouse 
15 
30 
 
18 
20 
 
Demand 
15 
10 
20 
18 
 

Use a network flow programming model for this problem. The goal is to minimize shipping cost.

Operations Research Models and Methods
by Paul A. Jensen & Jonathan F. Bard
Copyright 2001 - All rights reserved