Exam 24: Transportation Models

Consider the transportation data set for a minimization problem below. a.Calculate the initial solution using the northwest-corner rule. b.Calculate improvement indices,iterate,and solve for the optimal shipping pattern.

The initial solution to a transportation problem can be generated several ways,so long as:

The three information needs of a transportation problem are the origin points and the capacity at each,the destination points and the demand at each,and ________.

Which of the following combinations of sources and destinations would fill no more than 25% of cells with quantities to be shipped for the optimal solution?

The northwest-corner rule is best used:

A transportation problem has an optimal solution when:

The main difference between the intuitive lowest-cost method and the northwest-corner rule is that:

The purpose of the transportation approach for location analysis is to minimize which of the following?

A transportation problem has two origins: A can supply 20 units and B can supply 30 units.This problem has two destinations: C requires 25 units and D requires 35 units.Which of the following is true?

A transportation problem that has more units supplied than demanded will require a(n)________ to balance the problem.

If demand exceeds supply in a transportation problem,the problem must be balanced by adding a dummy source with additional supply.

A transportation problem has 6 origins and 12 destinations.How many possible routes are there for this problem? What is the maximum number of routes that will be used in the optimal solution?

A transportation problem has improvement indices of 5,4,0,and -3.Which of the following is always true?

Find the minimum cost solution for the transportation problem detailed in the table below. Before your solution can be implemented,you discover that the combination Source 3 - Destination 1 is unavailable,due to political turmoil in the country where Source 3 is located.Solve the revised problem.How much is cost increased by this complication?

In a transportation minimization problem,the negative improvement index associated with a cell indicates that reallocating units to that cell would lower costs.

For the problem data set below,what is the northwest-corner allocation to the cell Source 1-Destination 1?

Suppose the solution for a transportation model fills 5 cells with quantities to be shipped.Which of the following combinations of sources and destinations would be degenerate?

Consider the transportation problem and its optimal solution in the tables below.The cell Source 3 - Destination 3 is currently empty.What would be the change in the total shipping cost if the largest possible amount were shipped using that route,leaving all the supply and demand conditions unchanged?

One difference in the stepping-stone method compared to the northwest-corner and intuitive methods is:

What does the stepping-stone method do?