Tetrangle Manufacturing has fixed costs of $$2,160$ per day. The firm manufactures bicycle component upgrade kits. The kits have a short$-$run average variable cost of $$48$ and are sold for $$66$ each.Tetrangle Manufacturing has fixed costs of $$2,160$ per day. The firm manufactures bicycle component upgrade kits. The kits have a short$-$run average variable cost of $$48$ and are sold for $$66$ each.