Operations Research : Applications and Algorithms
Operations Research : Applications and Algorithms
4th Edition
ISBN: 9780534380588
Author: Wayne L. Winston
Publisher: Brooks Cole
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Chapter 5, Problem 4RP

a.

Explanation of Solution

Optimum solution

“Yes”, Zales still purchase rubies.

Reason

  • Let X1 be the Type 1 rings produced and X2 be the Type 2 rings produced and R be the number of rubies purchased.
  • The new optimum solution value or profit is calculated by the given formula:

    New value = Old value – (Key column value × Key

b.

Explanation of Solution

Profit

.

Reason

  • Let X1 be the Type 1 rings produced and X2 be the Type 2 rings produced and R be the number of rubies purchased.
  • The new optimum solution value or profit is calculated by the given formula:

    New value = Old value – (Key column value × Key row value<

c.

Explanation of Solution

Pay for another hour of labour

  • Let X1 be the Type 1 rings produced and X2 be the Type 2 rings produced and

d.

Explanation of Solution

Pay for another sapphire

  • Let X1 be the Type 1 rings produced and X2 be the Type 2 rings produced and R be the number of rubies purchased

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