2 000 Kg/h of an acetone (C) Water (A) solution, which contains 47% acid, is going to be extracted in continuous countercurrent with trichloroethane (B) to reduce the acid concentration to 4% in the Final Refined. Calculate the number of theoretical stages, flow and compositions of raffinate and extract, if 2 000 Kg/h of solvent are used.

\begin{tabular}{|c|c|c|c|c|c|} \hline \multicolumn{2}{|c|}{ Extract } & \multicolumn{3}{c|}{ Refined } \\ \hline acetone & water & trichloroethane & acetona & Agua & trichloroethane \\ \hline 0.69 & 98.1 & 1.2 & 0.18 & 0.5 & 99.3 \\ \hline 1.41 & 97.1 & 1.5 & 0.37 & 0.7 & 98.9 \\ \hline 2.89 & 95.5 & 1.6 & 0.79 & 0.8 & 98.4 \\ \hline 6.42 & 91.7 & 1.9 & 1.93 & 1 & 97.1 \\ \hline 13.3 & 84.4 & 2.3 & 4.82 & 1.9 & 93.3 \\ \hline 25.5 & 71.1 & 3.4 & 11.4 & 3.9 & 84.7 \\ \hline 36.7 & 58.9 & 4.4 & 21.6 & 6.9 & 71.5 \\ \hline 44.3 & 45.1 & 10.6 & 31.1 & 10.8 & 58.1 \\ \hline 46.4 & 37.1 & 16.5 & 36.2 & 15.1 & 48.7 \\ \hline \end{tabular}