An alloy of iron and silver has a total mass of 30 grams and a volume of 20.4cm^-3.Calculate the mass of iron only and the volume of silver only.
[Density of iron=1.62gcm^3 and density of silver=0.9gcm^3]
[Density of iron=1.62gcm^3 and density of silver=0.9gcm^3]