Answer:
The profit margin associated with the concert sponsorship is 31.3725 %
Step-by-step explanation:
The arena earns $1700 for a single event
Consequently, for 12 events, the arena gains 
The total for 12 events equals 20400
The expenses for this sponsorship amount to $14,000
Thus, profit = 20400-14000
This calculates to profit =6400
To find the profit margin =
Profit margin is defined as 
Thus, the profit margin for the concert sponsorship is 31.3725 %