MAT 540 WEEK 9 QUIZ 4 LATEST

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MAT 540 WEEK 9 QUIZ 4 LATEST

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MAT 540 Week 9 Quiz 4 Latest

MAT540

MAT 540 Week 9 Quiz 4 Latest

Question 1

When using a linear programming model to solve the “diet” problem, the objective is generally to

maximize profit.

Question 2

Fractional relationships between variables are permitted in the standard form of a linear program.

Question 3

A constraint for a linear programming problem can never have a zero as its right-hand-side value.

Question 4

A systematic approach to model formulation is to first construct the objective function before determining

the decision variables.

Question 5

In formulating a typical diet problem using a linear programming model, we would expect most of the

constraints to be related to calories.

Question 6

In a balanced transportation model, supply equals demand such that all constraints can be treated as

equalities.

Question 7

The following types of constraints are ones that might be found in linear programming formulations:

?

=

>

Question 8

Small motors for garden equipment is produced at 4 manufacturing facilities and needs to be shipped to 3

plants that produce different garden items (lawn mowers, rototillers, leaf blowers). The company wants to

minimize the cost of transporting items between the facilities, taking into account the demand at the 3

different plants, and the supply at each manufacturing site. The table below shows the cost to ship one

unit between each manufacturing facility and each plant, as well as the demand at each plant and the

supply at each manufacturing facility.

What is the demand constraint for plant B?

Question 9

The production manager for the Softy soft drink company is considering the production of 2 kinds of soft

drinks: regular and diet. Two of her resources are constraint production time (8 hours = 480 minutes per

day) and syrup (1 of her ingredient) limited to 675 gallons per day. To produce a regular case requires 2

minutes and 5 gallons of syrup, while a diet case needs 4 minutes and 3 gallons of syrup. Profits for

regular soft drink are \$3.00 per case and profits for diet soft drink are \$2.00 per case. What is the optimal

daily profit?

Question 10

The owner of Black Angus Ranch is trying to determine the correct mix of two types of beef feed, A and B

which cost 50 cents and 75 cents per pound, respectively. Five essential ingredients are contained in the

feed, shown in the table below. The table also shows the minimum daily requirements of each ingredient.

Ingredient

Percent per pound in Feed A

Percent per pound in Feed B

Minimum daily requirement (pounds)

1

20

24

30

2

30

10

50

3

0

30

20

4

24

15

60

5

10

20

40

The constraint for ingredient 3 is:

Question 11

In a portfolio problem, X1, X2, and X3 represent the number of shares purchased of stocks 1, 2, an 3

which have selling prices of \$15, \$47.25, and \$110, respectively. The investor has up to \$50,000 to

invest. The expected returns on investment of the three stocks are 6%, 8%, and 11%. An appropriate

objective function is

Question 12

If Xij = the production of product i in period j, write an expression to indicate that the limit on production of

the company’s 3 products in period 2 is equal to 400.

Question 13

The production manager for the Softy soft drink company is considering the production of 2 kinds of soft

drinks: regular and diet. Two of her resources are production time (8 hours = 480 minutes per day) and

syrup (1 of the ingredients) limited to 675 gallons per day. To produce a regular case requires 2 minutes

and 5 gallons of syrup, while a diet case needs 4 minutes and 3 gallons of syrup. Profits for regular soft

drink are \$3.00 per case and profits for diet soft drink are \$2.00 per case. What is the time constraint?

Question 14

A croissant shop produces 2 products: bear claws (B) and almond filled croissants (C). Each bear claw

requires 6 ounces of flour, 1 ounce of yeast, and 2 TS of almond paste. An almond filled croissant

requires 3 ounces of flour, 1 ounce of yeast, and 4 TS of almond paste. The company has 6600 ounces

of flour, 1400 ounces of yeast, and 4800 TS of almond paste available for today’s production run. Bear

claw profits are 20 cents each, and almond filled croissant profits are 30 cents each.

What is the optimal daily profit?

Question 15

The owner of Chips etc. produces 2 kinds of chips: Lime (L) and Vinegar (V). He has a limited amount of

the 3 ingredients used to produce these chips available for his next production run: 4800 ounces of salt,

9600 ounces of flour, and 2000 ounces of herbs. A bag of Lime chips requires 2 ounces of salt, 6 ounces

of flour, and 1 ounce of herbs to produce; while a bag of Vinegar chips requires 3 ounces of salt, 8

ounces of flour, and 2 ounces of herbs. Profits for a bag of Lime chips are \$0.40, and for a bag of Vinegar

chips \$0.50.

What is the constraint for salt?

Question 16

A systematic approach to model formulation is to first

Question 17

Assume that x2, x7 and x8 are the dollars invested in three different common stocks from New York stock

exchange. In order to diversify the investments, the investing company requires that no more than 60% of

the dollars invested can be in “stock two”. The constraint for this requirement can be written as:

Question 18

Balanced transportation problems have the following type of constraints:

Question 19

Quickbrush Paint Company makes a profit of \$2 per gallon on its oil-base paint and \$3 per gallon on its

water-base paint. Both paints contain two ingredients, A and B. The oil-base paint contains 90 percent A

and 10 percent B, whereas the water-base paint contains 30 percent A and 70 percent B. Quickbrush

currently has 10,000 gallons of ingredient A and 5,000 gallons of ingredient B in inventory and cannot

obtain more at this time. The company wishes to use linear programming to determine the appropriate

mix of oil-base and water-base paint to produce to maximize its total profit. How many gallons of water

rounding the nearest whole number, if appropriate.

Question 20

Kitty Kennels provides overnight lodging for a variety of pets. An attractive feature is the quality of care

the pets receive, including well balanced nutrition. The kennel’s cat food is made by mixing two types of

cat food to obtain the “nutritionally balanced catdiet.” The data for the two cat foods are as follows:

Kitty Kennels wants to be sure that the cats receive at least 5 ounces of protein and at least 3 ounces of

fat per day. What is the cost of this plan? Express your answer with two places to the right of the decimal

point. For instance, \$9.32 (nine dollars and thirty-two cents) would be written as 9.32