Solve with Mc-Cabe Thiele method and draw the graph please

3. A distillation column operates at 1.0 atmosphere pressure with two feeds. The overhead product leaves the condenser as saturated liquid at the rate of 70kmols/hr, and contains 90% (mole) methanol with 10% (mole) water. The bottom product is taken from a reboiler. The column operates with constant molar overflow at a reflux ratio of 2.0 . The following equilibrium data are given: Data regarding the feeds are as follows: Determine, a) The number of ideal stages required to perform the separation, b) The minimum number of ideal stages required for the same job