Question 1057933
From the Scientific American
"A karat is 1/24 part of pure gold by weight, so 24-karat gold is pure gold.
 To find the percentage of gold in an object when the purity is stated in karats, multiply the number of karats by 100 and divide by 24"
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What percent of pure gold is in a watch case that is 16 carats fine? In a chain that is 12 carats fine? In a ring that is 14 carats fine?