A container initially contains $0\mathrm{.}25$m$^(3)$ of wet steam at $300$ kPa $,$ with the liquid and vapor occupying $40\%$ and $60\%$ of the total volume, respectively. If the valve at the top of the contain is opened to release steam until the pressure drops to $150$ kPa $,$ and then the valve is closed, with $8$ kg of steam having been discharged, what will be the final volumes occupied by the liquid and vapour inside the container?