A hospital needs to purchase 10 gallons of a perishable medicine for use during the current month and 5 gallons for use during the next month. Because the medicine is perishable, it can only be used during the month of purchase. Two companies (Daisy and Laroach) sell the medicine. The medicine is in short supply. Thus, during the next two months, the hospital is limited to buying at most 8 gallons from each company. The companies charge the prices shown in the table below. Company Daisy Laroach Current Month's Price/Gallon ($) 700 730 Next Month's Price/Gallon ($) 750 790 Formulate a balanced transportation model to minimize the cost of purchasing the needed medicine.