In a typical network model representation of the transportation problem, the nodes indicate   a.  roads   b.  rail lines   c.  geographic locations   d.  rivers

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter6: Optimization Models With Integer Variables
Section6.5: Set-covering And Location-assignment Models
Problem 34P
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 In a typical network model representation of the transportation problem, the nodes indicate

 

a. 

roads

 

b. 

rail lines

 

c. 

geographic locations

 

d. 

rivers

 For all routes with positive flows in an optimized transportation problem, the reduced cost will be:

 

a. 

zero

 

b. 

how much less shipping costs would have to be for shipments to occur along that route

 

c. 

how much more shipping costs would have to be for shipments to occur along that route

 

d. 

how much the capacity is along that shipping route

The decision variables in transportation problems are:

 

a. 

profits

 

b. 

costs

 

c. 

flows

 

d. 

capacities

Which of the following statements is a type of constraint that is often required in blending problems?

 

a. 

Integer constraint

 

b. 

Quality constraint

 

c. 

Binary constraint

 

d. 

None of these options

 When a workforce scheduling problem is formulated as an integer programming model, it has:

 

a. 

an integer objective function

 

b. 

integer technological coefficients

 

c. 

integer constraints

 

d. 

all of these options

. When the profit increases with a unit increase in a resource, this change in profit will be shown in Solver's sensitivity report as the:

 

a. 

add-in price

 

b. 

sensitivity price

 

c. 

shadow price

 

d. 

additional profit

The condition of nonnegativity requires that:

 

a. 

the objective function cannot be less than zero

 

b. 

the decision variables cannot be less than zero

 

c. 

the right-hand side of the constraints cannot be greater than zero

 

d. 

the reduced cost cannot be less than zero

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