Graphical Method of solving Linear Programing problems PP.pptxHailemariam
he graphical method is used to optimize the two-variable linear programming. If the problem has two decision variables, a graphical method is the best method to find the optimal solution. In this method, the set of inequalities are subjected to constraints.
In Mathematics, linear programming is a method of optimising operations with some constraints. The main objective of linear programming is to maximize or minimize the numerical value. It consists of linear functions which are subjected to the constraints in the form of linear equations or in the form of inequalities. Linear programming is considered an important technique that is used to find the optimum resource utilisation. The term “linear programming” consists of two words as linear and programming. The word “linear” defines the relationship between multiple variables with degree one. The word “programming” defines the process of selecting the best solution from various alternatives.
Linear Programming is widely used in Mathematics and some other fields such as economics, business, telecommunication, and manufacturing fields. In this article, let us discuss the definition of linear programming, its components, and different methods to solve linear programming problems.
Graphical Method of solving Linear Programing problems PP.pptxHailemariam
he graphical method is used to optimize the two-variable linear programming. If the problem has two decision variables, a graphical method is the best method to find the optimal solution. In this method, the set of inequalities are subjected to constraints.
In Mathematics, linear programming is a method of optimising operations with some constraints. The main objective of linear programming is to maximize or minimize the numerical value. It consists of linear functions which are subjected to the constraints in the form of linear equations or in the form of inequalities. Linear programming is considered an important technique that is used to find the optimum resource utilisation. The term “linear programming” consists of two words as linear and programming. The word “linear” defines the relationship between multiple variables with degree one. The word “programming” defines the process of selecting the best solution from various alternatives.
Linear Programming is widely used in Mathematics and some other fields such as economics, business, telecommunication, and manufacturing fields. In this article, let us discuss the definition of linear programming, its components, and different methods to solve linear programming problems.
1. (TCO 2) An example of a period cost is (Points 5) ins.docxhyacinthshackley2629
1. (TCO 2) An example of a period cost is (Points : 5)
insurance on factory machines.
a controller’s salary.
property taxes on factory building.
wages of factory maintenance employees.
Question 2.2. (TCO 2) Which product would use job-order costing? (Points : 5)
Ink pens
Custom boot maker
Soda pop
Horse saddles
Question 3.3. (TCO 3) In a process costing system, which would be TRUE? (Points : 5)
There is no need to use time tickets to assign costs to processes.
There is no need to track materials to processes.
A process costing system is more expensive to maintain because it has more work-in-process accounts.
All of the above
Question 4.4. (TCO 8) A company keeps 60 days of materials inventory on hand to avoid shutdowns due to materials shortages. Carrying costs average $5,000 per day. A competitor keeps 30 days of inventory on hand, and the competitor's carrying costs average $2,000 per day. The non-value-added costs for the company are (Points : 5)
$300,000.
$150,000.
$60,000.
$0.
Question 5.5. (TCO 8) Non-value-added activities (Points : 5)
are unnecessary inputs.
are valued outputs to internal users.
are valued outputs to external users.
help meet the organization's needs, not the product needs.
Question 6.6. (TCO 1) The break-even point is (Points : 5)
the volume of activity where all fixed costs are recovered.
where fixed costs equal total variable costs.
where total revenues equal total costs.
where total costs equal total contribution margin.
Question 7.7. (TCO 1) The income statement for Thomas Manufacturing Company for 2011 is as follows.
Sales (10,000 units) $120,000
Variable expenses $72,000
Contribution margin $48,000
Fixed expenses $36,000
Operating income $12,000
Which is the contribution margin per unit? (Points : 5)
$7.20
$1.20
$4.80
$120,000
Question 8.8. (TCO 7) Which cost category would most likely use machine hours as its activity driver? (Points : 5)
Personnel
Maintenance
Purchasing
Payroll
Question 9.9. (TCO 7) Yo Department Store incurred $8,000 of indirect advertising costs for its operations. The following data have been collected for 2013 for its three departments.
Shoes
Cosmetics
Crafts
Sales
$120,000
$100,000
$100,000
Direct advertising costs
$9,000
$7,000
$4,000
Newspaper ad space
60%
20%
20%
How much of the indirect advertising costs will be allocated to the Shoes Department if newspaper ad space is the activity driver? (Points : 5)
$8,000
$4,800
$5,400
$3,200
Question 10.10. (TCO 5.
Engineering design is the process of developing a system, component or process to satisfy the desired
requirements. It is a decision making process, in which the basic mathematics and engineering disciplines are
utilized to convert resources optimally to achieve a predetermined objective. It also includes a variety of
realistic constraints such as reliability, safety, economic factors, ethical and social impacts. This work proposes
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guided through a structured sequence comprising identification of factors for the make-or-buy decision, and the
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1. (TCO 2) An example of a period cost is (Points 5) ins.docxhyacinthshackley2629
1. (TCO 2) An example of a period cost is (Points : 5)
insurance on factory machines.
a controller’s salary.
property taxes on factory building.
wages of factory maintenance employees.
Question 2.2. (TCO 2) Which product would use job-order costing? (Points : 5)
Ink pens
Custom boot maker
Soda pop
Horse saddles
Question 3.3. (TCO 3) In a process costing system, which would be TRUE? (Points : 5)
There is no need to use time tickets to assign costs to processes.
There is no need to track materials to processes.
A process costing system is more expensive to maintain because it has more work-in-process accounts.
All of the above
Question 4.4. (TCO 8) A company keeps 60 days of materials inventory on hand to avoid shutdowns due to materials shortages. Carrying costs average $5,000 per day. A competitor keeps 30 days of inventory on hand, and the competitor's carrying costs average $2,000 per day. The non-value-added costs for the company are (Points : 5)
$300,000.
$150,000.
$60,000.
$0.
Question 5.5. (TCO 8) Non-value-added activities (Points : 5)
are unnecessary inputs.
are valued outputs to internal users.
are valued outputs to external users.
help meet the organization's needs, not the product needs.
Question 6.6. (TCO 1) The break-even point is (Points : 5)
the volume of activity where all fixed costs are recovered.
where fixed costs equal total variable costs.
where total revenues equal total costs.
where total costs equal total contribution margin.
Question 7.7. (TCO 1) The income statement for Thomas Manufacturing Company for 2011 is as follows.
Sales (10,000 units) $120,000
Variable expenses $72,000
Contribution margin $48,000
Fixed expenses $36,000
Operating income $12,000
Which is the contribution margin per unit? (Points : 5)
$7.20
$1.20
$4.80
$120,000
Question 8.8. (TCO 7) Which cost category would most likely use machine hours as its activity driver? (Points : 5)
Personnel
Maintenance
Purchasing
Payroll
Question 9.9. (TCO 7) Yo Department Store incurred $8,000 of indirect advertising costs for its operations. The following data have been collected for 2013 for its three departments.
Shoes
Cosmetics
Crafts
Sales
$120,000
$100,000
$100,000
Direct advertising costs
$9,000
$7,000
$4,000
Newspaper ad space
60%
20%
20%
How much of the indirect advertising costs will be allocated to the Shoes Department if newspaper ad space is the activity driver? (Points : 5)
$8,000
$4,800
$5,400
$3,200
Question 10.10. (TCO 5.
Engineering design is the process of developing a system, component or process to satisfy the desired
requirements. It is a decision making process, in which the basic mathematics and engineering disciplines are
utilized to convert resources optimally to achieve a predetermined objective. It also includes a variety of
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a methodology and a procedure for the make-or-buy problem. Companies following this methodology are
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2. What is Operations Research?
• It is a discipline that deals with the application
of advanced analytical methods to help make
better decisions.
• Concerned with determining the maximum
(profit, performance, or yield) or minimum
(loss, risk, or cost) of some real world
objective.
3. Applications
• Manufacturing (determining the product mix)
• Scheduling (airlines, buses)
• Assignment (assigning crew to flights,
employees to projects)
• Facility location (deciding most appropriate
location for factory ware house)
• Health services (information and supply chain
management)
6. Simulation Modeling
• An alternative approach to modeling complex
systems
• Imitates the actual behavior of the real system
• Flexible as compared to mathematical
modeling
7. Principal Phases for Implementing OR
1. Definition of the problem
2. Construction of the model
3. Solution of the model
4. Validation of the model
5. Implementation of the solution
8. Linear Programming (LP)
• A mathematical modeling technique designed
to optimize the usage of limited resources.
• Maximizing or minimizing the linear objective
function subjected to linear constraints
9. Construction of LP Model
• Decision variables that we seek to determine
• Objective that we want to optimize
• Constraints that we need to satisfy
10. Linear Programming Problem 1
Consider a chocolate manufacturing company which
produces only two types of chocolate – A and B. Both the
chocolates require Milk and Choco only. To manufacture
each unit of A and B, following quantities are required:
• Each unit of A requires 1 unit of Milk and 3 units of Choco
• Each unit of B requires 1 unit of Milk and 2 units of Choco
The company kitchen has a total of 5 units of Milk and 12
units of Choco. On each sale, the company makes a profit
of
• Rs 6 per unit A sold
• Rs 5 per unit B sold.
Now, the company wishes to maximize its profit. How
many units of A and B should it produce respectively?
11. Linear Programming Problem 2
• A firm uses lathes, milling machines and grinding
machines to produces two parts. The following
table represents the machining time required for
each part, the machining time available on
different machines, and the profit for each part.
12. Type of Machine Machining time required for
machined parts (minutes)
Max. time
available per
week (minutes)
Part I Part II
Lathe machine 12 6 3000
Milling Machine 4 10 2000
Grinding machine 2 3 900
Profit per unit Rs. 40 Rs. 100
Formulate the linear programming problem to find
the number of parts I and II to be manufactured in
order to maximize profit.
13. Linear Programming Problem 3
• Food X contains 6 units of vitamin A per gram
and 7 units of vitamin B per gram and costs
Rs. 12 per gram. Food Y contains 8 units of
vitamin A per gram and 12 units of vitamin B
per gram and costs Rs. 20 per gram. The daily
minimum requirement of vitamin A and
vitamin B is 100 units and 120 units
respectively. Find the minimum cost of
product mix
14. Problem 4
• Reddy Mikks produces both interior and exterior paints
from two raw materials, M1 and M2.The following table
provides the basic data of the problem:
• A market survey indicates that the daily demand for
interior paint cannot exceed that for exterior paint by
more than 1 ton. Also, the maximum daily demand for
interior paint is 2 tons. Reddy Mikks wants to determine
the optimum (best) product mix of interior and exterior
paints that maximizes the total daily profit.
Tons of raw material per ton of Maximum
daily
availability
(tons)
Exterior Paint Interior Paint
Raw Material, M1 6 4 24
Raw Material, M2 1 2 6
Profit per ton
($1000)
5 4
15. Problem 5
• Ozark Farms uses at least 800 lb of special feed
daily. The special feed is a mixture of corn and
soybean meal with the following compositions:
• The dietary requirements of the special feed are
at least 30% protein and at most 5% fiber. Ozark
Farms wishes to determine the daily minimum-
cost feed mix.
Feedstuff
lb per lb of feedstuff
Cost
($/lb)
Protein Fiber
Corn 0.09 0.02 0.30
Soyabean
meal
0.60 0.06 0.90