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Mathematics, 09.12.2019 23:31 azireyathurmond1
Istart with 5 oz. of 18-karat gold. it's 75% pure gold, 25% other metals. i need to make it 22-karat, which is 91.7% pure gold. how much pure gold do i need to add to make it 22-karat?
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Istart with 5 oz. of 18-karat gold. it's 75% pure gold, 25% other metals. i need to make it 22-karat...
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