A 25 coin minted in 2015 is an alloy, which is 91.67% copper and 8.33% nickel. If
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A 25¢ coin minted in 2015 is an alloy, which is 91.67% copper and 8.33% nickel. If the quarter contains 5.20 g of copper, what is the mass of the coin?
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Somshukla Chakraborty
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