Assignment 4
We need to compare the total inventory cost of the order quantities at the various discount levels with that of the economic order quantity.
Since the holding cost is partially determined on the basis of purchase price, we need to re-calculate the EOQ by applying a discount price.
EOQ = √2 x (Order Cost per order) x (Annual Demand)
Carrying Cost per unit
EOQ at unit price $10
= √2 x (10) x (200*50)
.20*10
= 316 units
EOQ at unit price $8
= √2 x (10) x (200*50)
.20*8
= 353 units
Order Quantity |
316 units |
353 units |
Number of orders (Annual demand ÷ Order Quantity) |
10000 ÷ 316 = 31.64 |
10000 ÷ 353 = 28.33 |
Ordering Cost (number of orders × $100) |
32*10 = $320 |
29*10 = $290 |
Carrying Cost (20% × Purchase Price × Average Inventory) |
0.20×(10)×(316/2) = $320 |
0.20×(8)×(353/2) = $290 |
Cost of Purchase (Purchase Price × Annual Demand |
10×10000 = $100000 |
8*10000 = $80000 |
Total Inventory Cost |
$100640 |
$80580 |
Based on the above analysis, the optimum order quantity is 353 units.
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