Answer:
The cost of opportunity of one diner meal is 5 gallons.
Explanation:
The cost of opportunity is the alternative that you sacrifice when you choose an option.
It represents the benefits that you miss out on when choosing one alternative over another.
In this case, the cost of opportunity of one diner meal is the quantity of gallons that you sacrifice.
7 diners = 35 gallons
1 diner = 35*1/7= 5 gallons
The cost of opportunity of one diner meal is 5 gallons.
