Linear Programming: Hart Manufacturing
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Hart Manufacturing makes three products. Each product requires manufacturing operations in three departments: A, B, and C. The labor-hour requirements, by department, are as follows:
Department Product 1 Product 2 Product 3
A 1.5 3 2
B 2 1 2.5
C 0.25 0.25 0.25
During the next production period, the labor-hours available are 450 in department A, 350 in department B, and 50 in department C. The profit contributions per unit are $25 for product 1, $28 for product 2, and $30 for product 3.
Formulate a linear programming model for maximizing total profit contribution. Answer the questions in the attached case.
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Solution Summary
The expert examines linear programming for Hart Manufacturing.
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a) Let pi = units of product i produced:
Max 25p1 + 28p2 + 30p3
s.t.
1.5p1 + 3p2 + 2p3 < 450
2p1 + 1p2 + 2.5p3 < 350
.25p1 + .25p2 + .25p3 < 50
p1, p2, p3 > 0
b) The optimal solution is:
p1 = 60; p2 = 80; p3 = 60; Value = 5540
The solution provides a profit of $5540.
c) Since the solution in part (b) calls for producing all three products, the total setup cost is
$1550 = $400 + $550 + $600.
Subtracting the total ...
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