Question

the density of gold is 19.3 g/ml that of lead is 11.4g/ml that of iron 7.8g/ml, and that of aluminun 2.7 g/ml . a student is given separate samples of three substance A,B, and C along with a graduated cylinder containg 50.0 ml ..of water, Each sample has a mass of 200.0g and the student finds that the volumes of the samples are A , 25.64ml B, 10.36 and C 17.54ml ,what is the identity of each substance