Question

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 55 oz of gold and 2800 oz of silver each day. The Horseshoe Mine costs $16,000/day to operate, and it yields 70 oz of gold and 1000 oz of silver each day. Company management has set a target of at least 530 oz of gold and 11,600 oz of silver. How many days should each mine be operated so that the target can be met at a minimum cost?

Answer 1

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so , saddle mine = 2 days ..

horse mine = 6 days

minimum cost = 123000