Methyl$-$ethyl ketone $($MEK$)$ is being extracted from water using the extraction solvent ethyl butyrate $($EtBu$).$

If the mixture marked $"$K$"$ on the diagram below settled into two distinct phases, approximately how much MEK would be in the extract and the

raffinate?

Extract: $41$ wt$\%$ MEK. Raffinate: $93$ wt$\%$ MEK

Extract: $24$ wt$\%$ MEK. Raffinate: $18$ wt$\%$ MEK

Extract: $58$ wt$\%$ MEK. Raffinate: $8$ wt$\%$ MEK

Trick question: The mixture will not settle.