Using the information shown in the table, develop an aggregate plan for the next 5 years, using a constant level strategy. Calculate how much it would cost to follow that strategy.

Year	Forecast demand
1	300
2	120
3	200
4	110
5	135

Available workers	3
Starting Inventory	20
Salary per worker per year	$25,000
factor K (production per worker per year)	30
Cost of holding inventory per product per year	$0.04
Hiring cost per worker per year	$500
Layoff cost per worker per year	$1,000