2. How many parts of copper and gold needed to produce 18 Karat (K) jewelry? A. 18 parts is made up of copper and 6 parts is gold 8. 18 parts is made up of gold and 6 parts is copper C. 18 parts is made up of gold and 9 parts is copper D. 18 parts of the jewelry is made up of finest gold suited for the purpose
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