3.1. A production line is to run at 1000 units per month. Sales are forecast as shown in the following. Calculate the expected period-end inventory. The opening inventory is 600 units. All periods have the same number of working days.

Per Period		1	2	3	4	5	6
F Forecast		750	800	1050	1600	1000	850
Planned production	1000	1000	1000	1000	1000	1000
Plann Planned inventory	600

3.2. If the opening inventory is 100 units, the sales are 500 units and the ending inventory is 200 units, how many units manufacturing must produce?

3.3. Over a 10-week period the cumulative sales are forecast at 10,000 units, the opening inventory is 200 units, and the closing inventory is to be 100 units. What should be the weekly planned production for level production?