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Lecture example 1: Finding optimal order & Annual cost (Ordering Paper For MetroBank)

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  1. What is the Q*?
  1. What is the Total annual cost?
  1. What is # of orders per year?
  1. What is time between set-up (Cycle time)?
  1. If we know the cycle time and Q*, what does the solution tell us?
Solution
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What happens if we change the order quantity to 600?
Very little change in Total Costs, but perhaps more convenient

Lecture example 2: Finding optimal order & Annual cost(Bart’s Barometer Business)

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  1. What is the Q*?
  1. What is the Total annual cost?
  1. What is # of orders per year?
  1. What is time between set-up (Cycle time)?
  1. If we know the cycle time and Q*, what does the solution tell us?
Solution
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per year
per year
for working days
for working days

Lecture example 2: Lead time change variation (Bart’s Barometer Business)

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Solution
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Lecture example 3: EOQ with Planned Shortages With backorder!(Hervis Rent-a-Car)

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Solution
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How many days after receiving an order does Hervis run out of engines? How long is Hervis without any engines per cycle?
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Lecture example 4: EOQ with Quantity Discounts (Nick’s Camera Shop)

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Compared to the total cost of all three models, which one should Nick choose?
Solution
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Lecture example 5: Economic Production Lot Size

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What are the Q*, Total annual cost, # of production run per year?
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What are the total annual variable cost?
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Q1: Finding optimal order & Annual cost

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Solution
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Solution for excel
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Q2: EOQ with Quantity Discounts (題型:Range)

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Solution
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Solution (2a) for excel
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Solution (2b) for excel
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Q3: Finding optimal order & Annual cost

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Solution
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Solution for excel
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Q4: EOQ with Planned Shortages With backorder

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Solution
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Solution for excel
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Q5: Economic Production Lot Size

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Solution
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Textbook: Quantity Discounts for the EOQ Model (題型:Range)

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Solution
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Textbook: Economic Production Lot Size (題型:Range)

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Solution (formula might be diff from slides)
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What does the lots size and cycle time tell us?
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Textbook: EOQ with Planned Shortages With backorder (formula might be diff from slides)

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What is the maximum number of backorders?
What is the total annual cost?
What is the cycle time?
Solution (formula might be diff from slides)
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Excel file
FIT3158 Note - W8 Inventory Modelling under uncertaintyFIT3158 - Lab 8 Case studies on inventory modelling under uncertainty