Answer and Explanation:
For the local departmental store
As the person travels 30 minutes but the person sacrificed $36 for an hour at work so here the opportunity cost of the time is $36
For the across town
The person J travel time is 60 minutes ( 30 + 30) and her shopping time is 30 minutes but sacrificed $36
So the opportunity cost is
= 60 minutes + 30 minutes
= 90 minutes
= $54
For the neighbor city
The person J travel time is 120 minutes (120 + 120) and her shopping time is 30 minutes but sacrificed $36
So the opportunity cost is
= 120 minutes + 30 minutes
= 150 minutes
= $90
Now the table is
Store Opportunity Cost Price of a Dress Total Cost
of Time
(Dollars) (Dollars per dress) (Dollars)
Local
Department
Store 36 104 140
Across Town 54 87 141
Neighboring City 90 80 170
So she should buy from the local department cost as it contains the minimum cost