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Perth Mining Company operates two mines for the purpose of extracting gold and silver. The Saddle...

Perth Mining Company operates two mines for the purpose of extracting gold and silver. The Saddle Mine costs $13,500/day to operate, and it yields 60 oz of gold and 2900 oz of silver each day. The Horseshoe Mine costs $17,000/day to operate, and it yields 80 oz of gold and 1200 oz of silver each day. Company management has set a target of at least 500 oz of gold and 13,500 oz of silver. How many days should each mine be operated so that the target can be met at a minimum cost?

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