A piece of Styrofoam is completely submerged under water (ρ = 1000 kg/m^3). It is held under because it is attached to a weight whose volume is 0.0002m^3 and whose density is 15000 kg/m^3. While submerged, the system was weighed and the reading on the balance was 2.4 kilogram. The volume of the Styrofoam is 0.001m^3. Evaluate the density of the Styrofoam.