5. It is desired to extract the solution containing 27kg of B and 90kg of A with solvent S in a parallel flow liquid-liquid extraction system. Substance B in the feed solution is extracted into the solvent phase. Find the extract and raffinate phase compositions at the end of the two stages. (The same amount of pure solvent is fed to each stage.) XA: 0.10 YA: 0.20 XA: 0.20 YA: 0.20 XA: 0.13 YA: 0.21 XA: 0.15 YA: 0.30