landmark coal operates a mine. during july, the company obtained 500 tons of ore, which yielded 250 pounds of gold and 63,700 pounds of copper. the joint cost related to the operation was $500,000. gold sells for $325 per ounce and copper sells for $0.89 per pound. allocate the joint costs using relative weight. with these costs, what is the profit or loss associated with copper? round to two decimal places.