Answer
Water volume raises by 7.35 mL
Work Step by Step
Density of Silver = 10.5 g/mL
Mass of Silver = 50.0 g
Volume = mass / density = 50.0 g / 10.5 g/mL = 4.76 mL
Density of Gold = 19.32 g/L
Mass of Gold = 50.0 g
Volume = mass / density = 50.0 g / 19.32 g/mL = 2.59 mL
Total volume = 4.76 mL + 2.59 mL = 7.35 mL