Have certain costs alongs with the number of annual units sold of 1000.?

Question

Item: Raw materials (cost of hamburgers)
Total annual cost : 650
Item: Building rent
Total Annual Cost: 9000
What is the cost per unit of each?Suppose we increased our sales volume to 6000 units and then to 8000 units the following year (and are still within the relevant range), what would be the total annual cost and unit cost of fixed and variable costs.

Answer 1

fixed would be rent 9000 * 12
variable would be the hamburgers 6000*1.58 and the 8000 * 1.58