Assume markup is based on selling price. Complete:

Selling
Price % of
Markup Dollar
Markup Cost
$750 30% A B

Explanation:

Since the project is simply about planting trees and remodeling buildings so as to make the campus more aesthetically pleasing hence for the students of the college, the visual appearance of the campus can be categorized as non-rival and non-excludable. Meaning, anybody can freely benefit from the project.

The benefit of the beautification initiative is $18 since the average willingness to pay is by the students is $18.

We can thus conclude that the estimated benefit is less than the cost since we are told that $7,200 is the entire cost of the initiative, which when compared to be amount to be contributed has a shortfall (300*$18=$5,400∠$7200). Thus, the college administrators should not undertake the beautification initiative.