For the following monthly demand forecast develop an aggregate plan when

1},38 units per day is produced and unmet demand is backordered.

2}. 38 units per day is produced and overtime is when needed.

Month	Demand	Production Days
1	1100	20
2	1500	22
3	1200	21
4	800	21
5	700	18
6	900	22

item	cost
Inventory carrying cost	$ 5 per unit per month
Subcontracting cost per unit	$20 per unit
Average pay rate	$10 /hr ($80 per day)
Overtime pay rate	$17/hr (above 8 hrs/day)
Labour-hours to produce a unit	1.6 hours per unit
Cost of increasing daily production rate (hiring and training)	$300 per unit
Cost of decreasing daily production rate (layoffs)	$600 per unit
Backorder	$10 per unit