Question

A marketing research professor is conducting a telephone survey and needs to contact at least 160 wives, 140 husbands, 110 single adult males, and 120 single adult females. It costs $2 to make a daytime call and $4 (because of higher labor costs) to make an evening call. The table shown below lists the expected results. For example, 10% of all daytime calls are answered by a single male, and 15% of all evening calls are answered by a single female. Because of a limited staff, at most half of all phone calls can be evening calls. Determine how to minimize the cost of completing the survey

Percentages	Daytime	Evening
Wife	25%	25%
Husband	15%	30%
Single male	10%	25%
Single female	15%	15%
None	35%	5%

Develop a Report for the following

1) State the decision variables and constraints in this problem.

Answer 1