Refer to Example 5. Suppose that an increase in warehousing and other costs has brought up the inventory holding cost to $2 per unit per month. All other costs and quantities remain the same. Determine a revised optimal solution to this transportation problem.

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Month 2 3 Demand forecast 550 700 750 Capacity (maximum) Regular Over lime 500 500 500 50 50 50 Part time 120 120 100 Beginning inventory 100 Costs Regular time $00 per unit $80 par unit $90 per unit Inventory holding cost $1 per unit per month $3 per unit per month Overtime Part time Backorder cost