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MNGT 520 Advanced Production Management

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Question

Frandec Company manufactures, assembles, and rebuilds material handling equipment used in warehouses and distribution centers. One product, called a Liftmaster, is assembled from four components: a frame, a motor, two supports, and a metal strap. Frandec?s production schedule calls for 5000 Liftmasters to be made next month. Frandec purchases the motors from an outside supplier, but the frames, supports, and straps may be either manufactured by the company or purchased from an outside supplier. Manufacturing and purchase costs per unit are shown.;Component Manufacturing Cost Purchase Cost;Frame $38.00 $51.00;Support $11.50 $15.00;Strap $ 6.50 $ 7.50;Three departments are involved in the production of these components. The time (in minutes per unit) required to process each component in each department and the available capacity (in hours) for the three departments are as follows;Department;Component Cutting Milling Shaping;Frame 3.5 2.2 3.1;Support 1.3 1.7 2.6;Strap 0.8 ? 1.7;Capacity (hours) 350 420 680;a. Formulate and solve a linear programming model for this make-or-buy application.;How many of each component should be manufactured and how many should be purchased?;a. Let FM = number of frames manufactured;FP = number of frames purchased;SM = number of supports manufactured;SP = number of supports purchased;TM = number of straps manufactured;TP = number of straps purchased;Min;38FM;+;51FP;+;11.5SM;+;15SP;+;6.5TM;+;7.5TP;s.t.;3.5FM;+;1.3SM;+;0.8TM;?;21,000;2.2FM;+;1.7SM;?;25,200;3.1FM;+;2.6SM;+;1.7TM;?;40,800;FM;+;FP;?;5,000;SM;+;SP;?;10,000;TM;+;TP;?;5,000;FM, FP, SM, SP, TM, TP ? 0.;Solution;Manufacture;Purchase;Frames;5000;0;Supports;2692;7308;Straps;0;5000

 

Paper#35202 | Written in 18-Jul-2015

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