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Mathematics, 31.07.2021 14:00 dijaflame67

A coin contains 9 grams of nickel and 161616 grams of copper, for a total weight of 25 grams. What percentage of the metal in the coin is copper?

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A coin contains 9 grams of nickel and 161616 grams of copper, for a total weight of 25 grams. What...

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