( aj Formulate this as an LP problem to minimize the cost of the dog food . ( b) How many pounds of beef and grain should be included in each pound of dog food ? ['cj What is the cost and vitamin content of the final product ?" ['d') Find the range of objective function coefficient of decision variable regarding the pound of beef in each pound of dog food such that remains the optimal solution . Problem 19 : The seasonal Yield of olives in a Firzeus . Greece , Vineyard is greatly influenced by a process of branch pruning . If olive trees are prunEd Every two weeks . output is increased . The pruning process . however , requires considerably more labor than permitting the olives to grow on their own and results in a smaller size olive . It also, though , permits olive trees to be spaced closer together . The yield of' I barrel of olive s by pruning requires ; hours of labor and I acre of land . The production of a barrel of olives by the not - mal process requires only _ labor hours but takes 2 acres of land. An Olive growEr has 250 hours of labor available and a total of 150 acres for growing . Because of the Olive size difference , a barrel of olives produced on pruned trees sells for $ 20, whereas a barrel of regular olives has a market price of $30 . The growEr has & determined that because of uncertain demand . no more than to barrels of pruned Olives should be produced . L'sE graphical LF to find [ a] the maximum possible profit . ['by the best combination of barrels of pruned and regular olives ; ['I'] the number of acres that the olive growEr should devote to each growing PROCESS; [d] Find the range of Objective function coefficient of decision variable regarding the number of barrels of regular olives such that remains the optimal solution