Slider owns a hamburger restaurant. Slider's minimum average variable cost is $ 10 at a quantity of 100 hamburgers, and his minimum average total cost is $ 15 at a quantity of 200 hamburgers. His total fixed cost is $ 300 . Use this information to answer the questions.

a. What is Slider's AVC when he sells 200 hamburgers?
b. At a quantity of 25 hamburgers, the average total cost curve is:

i. below average variable cost.
ii. decreasing.
iii. There is not enough information or none of the other answers is correct.
iv. increasing.