Gold used to make jewelry is often a blend of​ gold, silver, and copper. Consider three alloys of these metals. The first alloy is​ 75% gold,​ 5% silver, and​ 20% copper. The second alloy is​ 75% gold,​ 12.5% silver, and​ 12.5% copper. The third alloy is​ 37.5% gold and​ 62.5% silver. If 100 g of the first alloy costs $2340.80​, 100 g of the second alloy costs $2363.00​, and 100 g of the third alloy costs $1350.00​, how much does each metal​ cost? Gold costs $___/g (Round to the nearest cent as needed.

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ISBN:9781938168383
Author:Jay Abramson
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Chapter7: Systems Of Equations And Inequalities
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Gold used to make jewelry is often a blend of​ gold, silver, and copper. Consider three alloys of these metals. The first alloy is​ 75% gold,​ 5% silver, and​ 20% copper. The second alloy is​ 75% gold,​ 12.5% silver, and​ 12.5% copper. The third alloy is​ 37.5% gold and​ 62.5% silver. If 100 g of the first alloy costs $2340.80​, 100 g of the second alloy costs $2363.00​, and 100 g of the third alloy costs $1350.00​, how much does each metal​ cost?

Gold costs $___/g (Round to the nearest cent as needed.

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