What does it cost pops to produce and sell one more

Question

What does it cost Pop's to produce and sell one more hamburger? Attached is the answer you gave me on the costs breakdown

Answer

Variable  costs
Material Cost	2500
Variable cost of Cook	2600
Variable  cost of Utilities	400
Variable Wages of server	2100
Total Variable Cost		7,600
Fixed Direct Cost
Supervisor Salary 30%		600
Fixed Overheads
Utilities	100
Rent 90%	900
Depreciation on Cooking Equipments	220	1220
Fixed Administrative & Selling Expenses
Advertisement	150
Depreciation Cash register	25
Supervisor  Salary 70%	1400
Janitorial Supplies	50
Rent	100
Janitorial wages	120	1,845
Total Fixed Cost		3,665.