Exam 4: Linear Programming: an Algebraic Approach

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Consider the linear programming problem. ​ Consider the linear programming problem. ​   Sketch the feasible set for the linear programming problem. Sketch the feasible set for the linear programming problem.

(Multiple Choice)
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A financier plans to invest up to $7 million in three projects. She estimates that project A will yield a return of 5% on her investment, project B will yield a return of 10% on her investment, and project C will yield a return of 20% on her investment. Because of the risks associated with the investments, she decided to put not more than 20% of her total investment in project C. She also decided that her investments in projects B and C should not exceed 60% of her total investment. Finally, she decided that her investment in project A should be at least 60% of her total investment. How much should the financier invest in each project if she wishes to maximize the total returns on her investments? What is the maximum amount she can expect to make from her investments? ​

(Multiple Choice)
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A company manufactures products A, B, and C. Each product is processed in three departments: I, II, and III. The total available labor-hours per week for departments I, II, and III are 990, 1,010, and 870, respectively. The time requirements (in hours/unit) and the profit per unit for each product are as follows: A company manufactures products A, B, and C. Each product is processed in three departments: I, II, and III. The total available labor-hours per week for departments I, II, and III are 990, 1,010, and 870, respectively. The time requirements (in hours/unit) and the profit per unit for each product are as follows:   If management decides that the number of units of product B manufactured must equal or exceed the number of units of products A and C manufactured, how many units of each product should the company produce in order to maximize its profit? __________ units A __________ units B __________ units C Maximum profit is $ __________. If management decides that the number of units of product B manufactured must equal or exceed the number of units of products A and C manufactured, how many units of each product should the company produce in order to maximize its profit? __________ units A __________ units B __________ units C Maximum profit is $ __________.

(Essay)
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Rewrite the given linear programming problem as a maximization problem with constraints involving inequalities of the form Rewrite the given linear programming problem as a maximization problem with constraints involving inequalities of the form   (with the exception of the inequalities   ).  (with the exception of the inequalities Rewrite the given linear programming problem as a maximization problem with constraints involving inequalities of the form   (with the exception of the inequalities   ).  ). Rewrite the given linear programming problem as a maximization problem with constraints involving inequalities of the form   (with the exception of the inequalities   ).

(Multiple Choice)
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A farmer has 150 acres of land suitable for cultivating crops A and B. The cost of cultivating crop A is $40/acre, whereas that of crop B is $60/acre. The farmer has a maximum of $7,400 available for land cultivation. Each acre of crop A requires 20 labor-hours, and each acre of crop B requires 25 labor-hours. The farmer has a maximum of 3,300 labor-hours available. If he expects to make a profit of $150/acre on crop A and $200/acre on crop B, how many acres of each crop should he plant in order to maximize his profit? What is the largest profit the farmer can realize? Are there any resources left over?

(Multiple Choice)
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Use the simplex method for solving nonstandard problems to solve the given linear programming problem. Use the simplex method for solving nonstandard problems to solve the given linear programming problem.

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Use the Simplex Method for Solving Nonstandard Problems to solve the linear programming problem. Use the Simplex Method for Solving Nonstandard Problems to solve the linear programming problem.

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Wayland Company manufacturers two models of its twin size futons, standard and deluxe, in two locations, I and II. The maximum output at location I is 600/week, whereas the maximum output at location II is 400/week. The profit per futon for standard and deluxe models manufactured at Location I is $30 and $20 respectively; the profit per futon for standard and deluxe modelsmanufatured at Location II is $34 and $18, respectively. For a certain week, the company has recieved an order of 600 standard models and 300 deluxe models. If prior commitments dictate that the number of deluxe models manufactured at Location II not exceed the number of standard models manufactured there by more than 50. Find how many of each model should be manufactured at each location so as to satisfy the order and at the same time maximize the Wayland's profit. What is the maximum profit?

(Multiple Choice)
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Solve the given minimization problem by the simplex method. Solve the given minimization problem by the simplex method.      Solve the given minimization problem by the simplex method.

(Essay)
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Use the simplex method for solving nonstandard problems to solve the given linear programming problem. Use the simplex method for solving nonstandard problems to solve the given linear programming problem.     x = __________ y = __________ z = __________ C = __________ x = __________ y = __________ z = __________ C = __________

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Solve the primal problem. Solve the primal problem.

(Multiple Choice)
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Solve the linear programming problem by the simplex method. Minimize Solve the linear programming problem by the simplex method. Minimize   subject to      subject to Solve the linear programming problem by the simplex method. Minimize   subject to      Solve the linear programming problem by the simplex method. Minimize   subject to      Solve the linear programming problem by the simplex method. Minimize   subject to

(Multiple Choice)
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Use the Simplex Method for Solving Nonstandard Problems to solve the linear programming problem. Use the Simplex Method for Solving Nonstandard Problems to solve the linear programming problem.

(Multiple Choice)
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The owner of the Health JuiceBar wishes to prepare a low-calorie fruit juice with a high vitamin A and vitamin C content by blending orange juice and pink grapefruit juice. Each glass of the blended juice is to contain at least 1,610 International Units (IU) of vitamin A and 194 IU of vitamin C. One ounce of orange juice contains 70 IU of vitamin A, 14 IU of vitamin C, and 13 calories; each ounce of pink grapefruit juice contains 140 IU of vitamin A, 12 IU of vitamin C, and 12 calories. How many ounces of each juice should a glass of the blend contain if it is to meet the minimum vitamin requirements while containing a minimum number of calories? __________ ounces of orange juice __________ ounces of pink grapefruit juice __________ calories

(Essay)
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Maximize Maximize   subject to 3x + 10y + 4z ≤ 120 5x + 3y + 8z ≤ 9 8x + 10y + 3z ≤ 104 X ≥ 0, y ≥ 0, z ≥ 0 subject to 3x + 10y + 4z ≤ 120 5x + 3y + 8z ≤ 9 8x + 10y + 3z ≤ 104 X ≥ 0, y ≥ 0, z ≥ 0

(Multiple Choice)
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Solve the linear programming problem by the simplex method. Solve the linear programming problem by the simplex method.

(Multiple Choice)
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Consider the linear programming problem. Maximize Consider the linear programming problem. Maximize     subject to       Sketch the feasible set for the linear programming problem. Consider the linear programming problem. Maximize     subject to       Sketch the feasible set for the linear programming problem. subject to Consider the linear programming problem. Maximize     subject to       Sketch the feasible set for the linear programming problem. Consider the linear programming problem. Maximize     subject to       Sketch the feasible set for the linear programming problem. Consider the linear programming problem. Maximize     subject to       Sketch the feasible set for the linear programming problem. Sketch the feasible set for the linear programming problem.

(Multiple Choice)
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A pharmaceutical company produces three kinds of cold formulas: I, II, and III. It takes 2 hr to produce 1,000 bottles of formula I, 4 hr to produce 1,000 bottles of formula II, and 3 hr to produce 1,000 bottles of formula III. The profits for each 1,000 bottles of formula I, formula II, and formula III are $220, $130, and $190, respectively. Suppose, for a certain production run, there are enough ingredients on hand to make at most 7,000 bottles of formula I, 17,000 bottles of formula II, and 9,000 bottles of formula III. Furthermore, suppose the time for the production run is limited to a maximum of 100 hr. How many bottles of each formula should be produced in this production run so that the profit is maximized? ​ __________ bottles of formula I, ​ __________ bottles of formula II, ​ __________ bottles of formula III ​ What is the maximum profit realizable by the company? $ __________ ​ Are there any resources left over? ​ ingredients for __________ bottles of formula I, ​ ingredients for __________ bottles of formula II, ​ ingredients for __________ bottles of formula III, ​ __________ hr of the time for the production run

(Essay)
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Use the simplex method for solving nonstandard problems to solve the given linear programming problem. Use the simplex method for solving nonstandard problems to solve the given linear programming problem.     x = __________ y = __________ z = __________ C = __________ x = __________ y = __________ z = __________ C = __________

(Essay)
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Use the technique developed in this section to solve the minimization problem. Use the technique developed in this section to solve the minimization problem.

(Multiple Choice)
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