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A coin contains 9 99 grams of nickel and 1 6 1616 grams of copper, for a total weight of 2 5 2525 grams. What percentage of the metal in the coin is copper?

Respuesta :

Weight of copper in coin, divided by total weight of coin..

Multiplied by hundred in the numerator..

tramserran

9 grams nickel + 16 grams copper = 25 gram coin

[tex]\frac{copper}{total} = \frac{16}{25}[/tex]

[tex]\frac{16}{25}*(\frac{4}{4}) = \frac{64}{100}[/tex] = 64%

Answer: 64%

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