A factory manufactures two articles of cloth; A and B. To manufacture the article A; a swing
machine has to be worked for 1.5 hours and in addition a craftsman has to work for 2 hours. To
manufacture the article B, the swing machine has to be worked for 2.5 hours and in addition the
craftsman has to work for 1.5 hours. In a week, the factory can avail of 80 hours of machine time
and 70 hours of craftsman’s time. The profit on each article A is birr 5 and that on each article of
B is birr 4. If all the articles produced can be sold away; find how many of each kind should be
produced to earn the maximum profit per week. Develop and LP model and solve using graphical
approach.