A tape recorder company manufacture model A, B and C with profit contribution per unit R. 15, R. 40 and R. 60 repectively. The weekly minimum requirement for Model A i 25 unit, for model B i 130 unit and for Model C i 55 unit. A dozen of unit of model A require 4 hr. For manufacturing, 3 hr. For aembling and 1 hr. For packaging. The correponding figure for a dozen unit of model B are 2. 5, 4 and 2 and for a dozen unit of model C are 6, 9 and 4. The company ha available 130 hr. For manufacturing, 170 hr. For aembling and 52 hr. For packaging during coming week. Formulate thi problem a an LP model o a to maximize the total profit to the company