The Textile Company sells 175 units per month of a certain large bath towel. The unit cost of a towel to the store is $2.50 and the cost of placing an order has been estimated to be $12.00. The store uses an inventory carrying charge of 27% per year. Compute: i. The optimal order quantity [] ii. Order frequency [] iii. The annual cost of inventory management [] iv. If, through automation of the purchasing process, the ordering cost can be cut to $4.00, what will be the new economic order quantity [] v. Order frequency [] vi. Annual inventory management cost? [] vii. Explain these results.
Demand = 175 units per month = 175*12 = 2100 units per year
Unit cost = $2.50
Ordering cost = $12 per order
Holding cost = 0.27 * 2.5 = 0.675 = 0.68
i) Optimal order quantity
ii) Order frequency
iii) Annual cost of inventory management = Annual Holding cost + Annual ordering cost
Economic order quantity =
Order Frequency =
Annual cost of inventory =
D - Annual demand
S - Cost of ordering per order
H - Holding cost per unit per annum
CASE I
Economic order quantity =
=
= (74117.65)^1/2
= 272.25
= 272
Order Frequency =
= 2100/272
= 7.72
= 8
Annual cost of inventory management = Annual Holding cost + Annual ordering cost
= H * Q/2 + S * D/Q
= 0.68*272/2 + 12 * 2100/272
= 92.48 + 96
= 188.48
CASE II
Ordering cost = $4 per order
Economic order quantity =
= (2*2100*4/0.68)^1/2
= (24705.88)^1/2
= 157.18
= 157
Order Frequency =
= 2100/157
= 13.38
= 14
Annual cost of inventory management = Annual Holding cost + Annual ordering cost
= H * Q/2 + S * D/Q
= 0.68*157/2 + 4 * 2100/157
= 53.38 + 56
= 109.38
Explanation:
In case I, order should be given 8 times in a year in a lot of 272 to cater to the demand. The total annual cost of inventory management is $188.82.
In case II, order should be given 14 times in a year in a lot of 157 to cater to the demand. The total annual cost of inventory management is $109.38.
The Textile Company sells 175 units per month of a certain large bath towel. The unit...
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