A farmer in Lufyanyama has 2000 acres of land on which he can grow maize, wheat and Soya beans. Each acre of maize cost K200 for preparation requires 14 man-days of work and yields a profit of K60. An acre of wheat costs K240 to prepare requires 20 man-days of work and yields a profit of K80. An acre of Soya beans costs K140 to prepare requires 16 man-days of work and yields a profit of K40. If the farmer has K200, 000 for preparation and can count 16,000 man-days work. a) Formulate the LP model to allocate the number of acres to each crop to maximize profit b) Using the simplex method, how many acres of each crop must he farm to maximize the profits? c) Calculate the range of optimality for Wheat and Soya beans

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter4: Linear Programming Models
Section: Chapter Questions
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A farmer in Lufyanyama has 2000 acres of land on which he can grow maize, wheat and Soya beans. Each acre of maize cost K200 for preparation requires 14 man-days of work and yields a profit of K60. An acre of wheat costs K240 to prepare requires 20 man-days of work and yields a profit of K80. An acre of Soya beans costs K140 to prepare requires 16 man-days of work and yields a profit of K40. If the farmer has K200, 000 for preparation and can count 16,000 man-days work.

  1. a) Formulate the LP model to allocate the number of acres to each crop to maximize profit
  2. b) Using the simplex method, how many acres of each crop must he farm to maximize the profits?
  3. c) Calculate the range of optimality for Wheat and Soya beans
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ISBN:
9781337406659
Author:
WINSTON, Wayne L.
Publisher:
Cengage,