The MRP gross requirements for Item X are shown here for the next 10 weeks. Lead time for A is two weeks, and setup cost is $11. There is a carrying cost of $0.02 per unit per week. Beginning inventory is 78 units.

	WEEK
1	2	3	4	5	6	7	8	9	10
Gross requirements	25	10	20	50	10	30	98	23	44	152

Use the least total cost lot-sizing method to determine the quantity to order with the first order released and which periods' requirements will be covered by that order.

Use the least total cost lot-sizing method to determine the quantity to order with the first order released and which periods' requirements will be covered by that order.

Least total cost method indicates that ______ units should be ordered to cover the needs for periods ______.