The Checkers run their hamburger business 300 days a year and obey the economic order quantity formula without question. They use 30 hamburger buns per day; it costs them $10 to place an order and $2 to hold a bun in inventory for a year. Their hamburger bun supplier is equally dedicated, also keeping its doors open and ovens baking 300 days a year. How many days pass in-between orders for more hamburger buns? Group of answer choices 10 days 15 days 5 days 20 days