Please answer questions below in Excel and provide instructions with formulas to solve these problems in Excel

Demand 8,500 14,500 13,500 12,600 18,000 15,000 9,000 Sentry wants to determine the least expensive way of manufacturing and shipping locks from its plants to the distributors. Because the total demand from distributors exceeds the total production capacity for all the plants, Sentry realizes it will not be able to satisfy all the demand for its product but wants to make sure each distributor will have the opportunity to ll at least 80% of the orders received. a. Create a spreadsheet model for this problem and solve it. b. What is the optimal solution