show the graph to find the number of theoritical stages

Oil is to be extracted from 10,000lb of granulated halibut livers, based on oil free livers, which contain 0.06 gal of extractable oil per pound of oil-free livers. 700gal of diethyl ether containing 5wt% of oil is used as the extraction solvent. It is desired to extract 93% of the total oil present in the system using a multistage countercurrent extraction tank. The final extract is to contain 0.7 gal oil per gal of extract. The entrainment of solution by the granulated liver mass was obtained from experiments and the data is presented in Table 2. Determine the number of theoretical stages and the amounts and concentrations of all streams leaving the process. Table 2: The entrainment of solution by granulated liver mass obtained from experiments Oil is to be extracted from 10,000lb of granulated halibut livers, based on oil free livers, which contain 0.06 gal of extractable oil per pound of oil-free livers. 700gal of diethyl ether containing 5wt% of oil is used as the extraction solvent. It is desired to extract 93% of the total oil present in the system using a multistage countercurrent extraction tank. The final extract is to contain 0.7 gal oil per gal of extract. The entrainment of solution by the granulated liver mass was obtained from experiments and the data is presented in Table 2. Determine the number of theoretical stages and the amounts and concentrations of all streams leaving the process. Table 2: The entrainment of solution by granulated liver mass obtained from experiments