a. If carrying costs are $2 per year for each stone, find the order quantity that will minimize total annual cost. b. If annual carrying costs are 30 percent of unit cost, what is the optimal order size? c. If lead time is six working days, at what point should the company reorder?

Practical Management Science
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ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
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Q4 Lab2 

Subject: Production And operation Mnagement 

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QUESTION 4 (INVENTORY MANAGEMENT: QUANTITY DISCOUNT MODEL)
A jewelry firm buys semiprecious stones to make bracelets and rings. The supplier quotes a price
of $8 per stone for quantities of 600 stones or more, $9 per stone for orders of 400 to 599 stones,
and $10 per stone for lesser quantities. The jewelry firm operates 200 days per year. Usage rate is
25 stones per day, and ordering costs are $48.
a. If carrying costs are $2 per year for each stone, find the order quantity that will minimize total
annual cost.
b. If annual carrying costs are 30 percent of unit cost, what is the optimal order size?
c. If lead time is six working days, at what point should the company reorder?
Transcribed Image Text:QUESTION 4 (INVENTORY MANAGEMENT: QUANTITY DISCOUNT MODEL) A jewelry firm buys semiprecious stones to make bracelets and rings. The supplier quotes a price of $8 per stone for quantities of 600 stones or more, $9 per stone for orders of 400 to 599 stones, and $10 per stone for lesser quantities. The jewelry firm operates 200 days per year. Usage rate is 25 stones per day, and ordering costs are $48. a. If carrying costs are $2 per year for each stone, find the order quantity that will minimize total annual cost. b. If annual carrying costs are 30 percent of unit cost, what is the optimal order size? c. If lead time is six working days, at what point should the company reorder?
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