1. Solving LP’s using Microsoft Excel™ Common LP Solvers: Commercial: LINDO, CPLEX, AMPL, OSL, … Free software: Several available on web, e.g. try: google search: java LP solver

2. Setting up Microsoft Excel™ Step 0: Link the solver libraries MS Excel  Tools  Add-Ins…  Solver Add In Step 1. Set up the Problem data Step 2. Set up the solver data Step 3. Solve Step 4. Study results

3. Step 1. Set up problem data maxz( x, y) = 15 x + 10y[objective] s.t.2x + y ≤ 1500[Urea] x + y ≤ 1200[Potash] x ≤ 500[Rock phosphate] x ≥ 0,[non-negativity] y ≥ 0[non-negativity] z( x, y) = 15 x + 10y

4. Step 1. Set up the Problem Data 2x + y ≤ 1500[Urea] maxz( x, y) = 15 x + 10y[objective] s.t.2x + y ≤ 1500[Urea] x + y ≤ 1200[Potash] x ≤ 500[Rock phosphate] x ≥ 0,[non-negativity] y ≥ 0[non-negativity]

5. Step 2. Set up the Solver Data Step 2.1Tools  Solver… Step 2.2Objective function

6. Step 2. Set up the Solver Data.. Step 2.3Specifying the variables

7. Step 2. Set up the Solver Data… Step 2.4Specifying the constraints

8. Step 3. Solve Complete problem specification

9. Step 4. Study the results Optimum profit How much Type A to produce How much Type B to produce How much raw material we should order These reports give some more useful information