Mathematics, 27.01.2020 08:31 jstamey757

Acoin contains 9 grams of nickel and 16 grams of copper, for a total weight of 25 grams.
what percentage of the metal in the coin is copper?

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Acoin contains 9 grams of nickel and 16 grams of copper, for a total weight of 25 grams.
what...