Question

A company is planning how to use its $225,000 advertising budget to increase its products sales....

A company is planning how to use its $225,000 advertising budget to increase its products sales. The company is considering advertising in newspapers and on the Internet. The more the company uses a particular medium, the less effective is each additional ad. The table below shows the number of new customers reached by each ad. Each newspaper ad costs $2,000, and each Internet ad costs $5,000. At most, 45 newspaper ads and 30 Internet ads can be placed.

Number of Ads

New Customers

Newspapers

1-15

2000

16-25

1600

26-35

1100

Internet

1-9

20000

10-20

18000

21-35

14000

Formulate a model in standard form to help the company maximize the number of new customers created by advertising. (Note: Don't have to solve it.)

Homework Answers

Answer #1

Model of company to maximize the number of new customers created by advertising.

Decision variable:

x1i=number of newspaper ads

x2i=number of internet ads

Function objective:

Max z= (1-15) 2000*x11+ (16-25) 2000*x12+ (26-35) 2000*x13+ (1-9) 5000*x21+ (10-20) 5000*x22+ (21-35) 5000*x23

Constraints:

x11+x12+ x13≤ 45

x21+ x22+ x23≤ 30

(1-15) 2000*x11+ (16-25) 2000*x12+ (26-35) 2000*x13+ (1-9) 5000*x21+ (10-20) 5000*x22+ (21-35) 5000*x23 ≤ $225,000

(1-15) 2000*x11 ≤2000

(16-25) 2000*x12 ≤1600

(26-35) 2000*x13 ≤1100

(1-9) 5000*x21 ≤20000

(10-20) 5000*x22 ≤18000

(21-35) 5000*x23 ≤14000

x11, x12, x13, x21, x22, x23 ≥ 0

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