A drugstore sells 30 bottles of antibiotics per week. Each time it orders antibiotics, there is a fixed ordering cost of $10 and a cost of $10 per bottle. Assume that the store’s cost of capital is...

A drugstore sells 30 bottles of antibiotics per week. Each time it orders antibiotics, there is a fixed ordering cost of $10 and a cost of $10 per bottle. Assume that the store’s cost of capital is 10%, there is no storage cost, and antibiotics spoil and cannot be sold if they spend more than 1 week in inventory. When the drugstore places an order, how many bottles of antibiotics should it order?