1. The problem statement, all variables and given/known data Wooden qube with 12cm faces floating inside water and oil in 2 layers. The oil floats over the water. Water density: 1gr/cm cubed Oil density: 0.8 gr/cm cubed What is the mass of the cube. 2. Relevant equations 3. The attempt at a solution F(buoyancy) = g*(density)*volume , but how do i get water and oil in the equation. Thank you for your help.