4) Model the linear programming problem for the following scenario: (10 marks) Do not need to solve for the variables. Define the variables, write the objective function and the constraints only. (10 min) Perth Mining Company operates three mines for the purpose of extracting gold and silver. The Saddle Mine costs $12,500 per day to operate, and it yields 40 oz of gold and 600 oz of silver each day. The Horseshoe Mine costs $15,100 per day to operate, and it yields 50 oz of gold and 650 oz of silver each day. The Shore mine costs $14000 per day to operate and yields 45 oz gold and 500 oz of silver per day. Company management has set a target of at least 750 oz of gold and 8500 oz of silver. How many days should each mine be operated so that the target can be met at a minimum cost to the company