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An alloy of iron and silver has a total mass of 30 grams and a volume of 20.4 centimetre cube Calculate the mass of iron only and the volume silver only

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Fe 7.87 g/cm^3
Ag 10.5 g/cm^3

Viron* 7.87 + Vag*10.5 = 30
Viron + Vag = 20.4

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