Lazy Day Donuts makes powdered donuts that are sold by the dozen. Each box of a dozen donuts requires ½ pound of flour. The company began the year with 20,000 pounds of flour on hand, but would like to have just 10,000 pounds of flour on hand at the end of the cur-rent year. Lazy Day expects to produce 200,000 boxes of donuts during the year.

Required
How many pounds of flour must be purchased during the year to have enough for production needs and the desired ending inventory?