Answer:
3mL
Step-by-step explanation:
Density = mass/volume 
Give the density of gold as 20g/mL and the mass as 60g 
Volume v = ?
Using the above formula 
20 = 60/v
Cross multiply 
20v = 60 
Divide both sides by 20 
20v/20 = 60/20
v = 3mL
Therefore the gold of density 20g/mL and mass 60g has a volume of about 3mL