Given the following information set up the problem in a transportation table and solve for the minimum-cost plan:

	PERIOD
	1		2	3
Demand		550	700	750
Capacity
Regular		500	500	440
Overtime		50	50	50
Subcontract		120	120	100
Beginning inventory		100
Costs
Regular time	$	60 per unit
Overtime	$	80 per unit
Subcontract	$	90 per unit
Inventory carrying cost	$	1 per unit per month
Back-order cost	$	3 per unit per month

Suppose the inventory carrying cost has just increased and is now $2 per unit per period. Compute the total cost for the original transportation model with $1 inventory carrying cost, and the new total cost at $2 carrying cost. What is the additional cost for the optimal plan?

Additional Cost =