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Mathematics, 23.12.2020 23:00 AJRL2005

How much platinum worth 1500 for an ounce needs to be added to 10 ounces of gold worth 1200 for an ounce to make a gold platinum mixture were 1300 for an ounce

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How much platinum worth 1500 for an ounce needs to be added to 10 ounces of gold worth 1200 for an o...
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