The owner of a machine shop is planning to expand by purchasing some new machines-presses and lathes. The owner has estimated that each press purchased will increase profit by $5000 per day and each lathe will increase profit by P7500 daily. The number of machines the owner can purchase is limited by the cost of the machines and the available floor space in the shop. The machine purchase prices and space requirements are as follows: ( Required Floor Space (m²) Purchase Price Press 1.4 $400,000 Lathe 2.8 200,000 The owner has a budget of $2,200,000 for purchasing machines and 22 square meters of available floor space.

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
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The owner of a machine shop is planning to expand by
purchasing some new machines-presses and lathes. The
owner has estimated that each press purchased will increase
profit by P5000 per day and each lathe will increase profit by
P7500 daily. The number of machines the owner can
purchase is limited by the cost of the machines and the
available floor space in the shop. The machine purchase
prices and space requirements are as follows:
Required Floor
Space (m2).
Purchase Price
Press
1.4
P400,000
Lathe
2.8
200,000
The owner has a budget of P2,200,000 for purchasing
machines and 22 square meters of available floor
space.
Transcribed Image Text:The owner of a machine shop is planning to expand by purchasing some new machines-presses and lathes. The owner has estimated that each press purchased will increase profit by P5000 per day and each lathe will increase profit by P7500 daily. The number of machines the owner can purchase is limited by the cost of the machines and the available floor space in the shop. The machine purchase prices and space requirements are as follows: Required Floor Space (m2). Purchase Price Press 1.4 P400,000 Lathe 2.8 200,000 The owner has a budget of P2,200,000 for purchasing machines and 22 square meters of available floor space.
a. Formulate an integer programming model to determine
how many of each type of machine to purchase to
maximize the daily increase in profit.
b. Solve the model formulated in part (a) without integer
requirements. What are the optimal solution for the press and
the lathe machines? What is the optimal profit?
c. Round the press and lathe values found in part (b). Is the
solution feasible? Why?
d. Truncate the press and lathe values found in part (b) (i.e
drop the fractional part of each value). Is the solution
feasible? Why?
e. Add integer requirements to the model you constructed in
part (b). What is the optimal profit and what are the optimal
number of press and lathe machines?
Transcribed Image Text:a. Formulate an integer programming model to determine how many of each type of machine to purchase to maximize the daily increase in profit. b. Solve the model formulated in part (a) without integer requirements. What are the optimal solution for the press and the lathe machines? What is the optimal profit? c. Round the press and lathe values found in part (b). Is the solution feasible? Why? d. Truncate the press and lathe values found in part (b) (i.e drop the fractional part of each value). Is the solution feasible? Why? e. Add integer requirements to the model you constructed in part (b). What is the optimal profit and what are the optimal number of press and lathe machines?
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