explain each step in detail please.

A mixture of 10mol% n-butane, 40mol% n-pentane, and 50mol% n-hexane is to be fractionated in a column with the equivalent of 25 equilibrium stages at 2bar pressure. The feed is to be fed to the column at its boiling point. It is specified that only 0.5% of the n-hexane in the feed is to appear in the distillate and 0.5% of the n-pentane to appear in the bottoms product. The column operates with a total condenser. Estimate: a) The temperatures in the top and bottom stages b) The reflux ratio at which the column must operate in order to achieve the required separation. You are provided with the Erbar-Maddox chart and Underwood and Fenske equations