Suppose that at an output level of $200$ units the average total cost is $$1\mathrm{.}00$ per unit and the average variable cost is $$\mathrm{.}60$ per unit. We know that the

total variable cost is $$600$

total cost is $$300$

average fixed cost is $$\mathrm{.}30$ per unit

total fixed cost is $$80$