Average Cost Of Tire Rotation

tire rotation
Tire rotation or rotating tires is the practice of moving automobile wheels and tires from one position on the car, to another, to ensure even tire wear. Tire wear is uneven for any number of reasons.

average cost
In economics, average cost or unit cost is equal to total cost divided by the number of goods produced (the output quantity, Q). It is also equal to the sum of average variable costs (total variable costs divided by Q) plus average fixed costs (total fixed costs divided by Q).
total cost for all units bought (or produced) divided by the number of units
Under the average cost method, it is assumed that the cost of inventory is based on the average cost of the goods available for sale during the period.