will upvote if answered in 20 mins

The owner of a sporting goods chain has projected the following aggregate plan for constant monthly production of 1700 units. Inventory holding costs are $10 per uniu a Subcontracting will be limited to 800 units per month, at a cost of $55 per unit. Stockout costs are $90 per unit. How many stockout are unavoidable over the planning period (how many units of shortfall are unavoidable)? planning period (how many units of shortfall are unavoidable)