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An alloy that is made up of two metals has a density of 7 g/cm3. The density of one of the metals that makes up

An alloy that is made up of two metals has a density of 7 g/cm3. The density of one of the metals that makes up the alloy is 9 g/cm3, and the density of the other metal that makes up the alloy is 4 g/cm3. To the nearest ones, what percent of the alloy is made up of the metal that has a density of 9 g/cm3?

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