Answer:
No, their economic cost of enrolling in the business program is not the same for both,
Explanation:
The explicit costs of going back to college are the same for Walter and Jesse, e.g. they might be $20,000 per year, or even $30,000 doesn't matter for this analysis. But Walter is currently working as a teacher and that means taht if he decides to go to college, his implicit costs will include the forgone salary as a teacher which is $50,000 per year. Implicit costs are opportunity costs, i.e. additional costs or benefits lost from choosing one activity or investment instead of another alternative.
Since Jesse is not working, whether she goes back to college or not will not affect her income, it will still be $0, but if Walter goes back to college he will lose his salary.