A distribution center (DC) in Wisconsin stocks Sony plasma TV sets. The center receives its inventory from a mega warehouse in Kansas with a lead time (L) of 5 days. The DC uses a reorder point (R) of 300 sets and a fixed order quantity (Q) of 250 sets. Current on-hand inventory at the end of Day 1 is 400 sets. There are no scheduled receipts (SR) and no backorders (BO). All demands and receipts occur at the end of the day.

Determine when to order using a Q system