Radina's Coffeehouse has two processing plants (P1 and P2) that roast imported coffee beans. After roasting, the plants produce three types of coffee beans, A, B, and C. The company has contracted with a chain of cafes to provide coffee beans each week in the following EXACT quantities - 20 tons of type A, 11 tons of type B, and 18 tons of type C. The two plants have the same capacity, but their diverse operational procedures affect costs per ton as below: Manufacturing Cost per Ton ($) B Plant A Capacity 900 1,125 875 25 P1 P2 850 1,200 950 25 Demand 20 11 18 nos Formulate and solve an all-integer linear programming model that will determine how many tons of each type of coffee beans are produced in each plant while minimizing the total cost and answer questions 8, 9, 10, 11, 12, 13, and 14 (Hint: Let Xij = number of tons of coffee beans produced in plant i of type j; i = 1, 2, and j = 1, 2, 3): Q8. How much "A" coffee beans are produced in plant 1 (in tons)? 0.4 O 11 20