I need the answer as soon as possible

4 5 A company manufacturing air coolers has, at present, firm orders for the next 6 months. The company can schedule its production over the next 6 months to meet orders on either regular or overtime basis. The order size and production costs over the next six months are as follows: Month 1 2 3 6 Orders 640 660 700 750 550 650 Cost/unit ) for regular production 40 42 41 39 40 Cost/unit ) for overtime production 52 50 53 50 45 43 With 100 air coolers in stock at present, the company wishes to have at least 150 air coolers in stock at the end of 6 months. The regular and overtime production in each month is not to exceed 600 and 400 units respectively. The inventory carrying cost for air coolers is * 12 per unit per month. Formulate the L.P. model to minimize the total cost