12 For a telephone survey, a marketing research group needs to contact at least 150 wives, 120 husbands, 100 single adult males, and 110 single adult females. It costs $2 to make a daytime call and (because of higher labor costs)

$5 to make an evening call. Table 52 lists the results. Because of limited staff, at most half of all phone calls can be evening calls. Formulate an LP to minimize the cost of completing the survey.

Transcribed Image Text:

Number of Ads New Customers Newspaper 1-10 900 11-20 600 21-30 300 Television 1-5 10,000 6-10 5,000 11-15 2,000 TABLE 51 From Los Angeles Chicago Profit per Million Barrels To Houston To New York 20,000 15,000 18,000 17,000