In: Finance
Ergonomics, Inc. sells ergonomically designed office chairs. The company provided the following information:
Average Demand = 15 units per day
Average lead time = 20 days
Item unit cost = $60 for orders of less than 200 units
Item unit cost = $58 for orders of more 200 units or more
Ordering costs = $30
Inventory carrying costs = 25%
The business year is 250 days
Based on the above information:
Assume there is no uncertainty at all about demand or the lead time.
Please include calculations.
Solution:-
EOQ at $60 price-
Demand = 15 units per day * 250 days = 3,750 Units
EOQ =
EOQ =
EOQ = 122.47 Units or 122 units.
Average Inventory =
Average Inventory =
Average Inventory = 61 Units
Total Annual cost of ordering 122 Units-
Annual Ordering Cost =
Annual Ordering Cost =
Annual Ordering Cost = $1,229.51
Annual Carrying Cost =
Annual Carrying Cost =
Annual Carrying Cost = $915
Annual Production cost = $3,750 * $60 = $2,25,000
Total Cost = Annual Production cost + Annual Ordering cost + Annual Carrying Cost
Total Cost = $2,25,000 + $1,229.51 + $915
Total Cost = $2,27,144.51
EOQ at $58 price-
Demand = 15 units per day * 250 days = 3,750 Units
EOQ =
EOQ =
EOQ = 124.57 Units or 125 units.
Average Inventory =
Average Inventory =
Average Inventory = 62.50 Units
Total Annual cost of ordering 125 Units-
Annual Ordering Cost =
Annual Ordering Cost =
Annual Ordering Cost = $1,200
Annual Carrying Cost =
Annual Carrying Cost =
Annual Carrying Cost = $906.25
Annual Production cost = $3,750 * $58 = $2,17,500
Total Cost = Annual Production cost + Annual Ordering cost + Annual Carrying Cost
Total Cost = $2,17,500 + $1,200 + $906.25
Total Cost = $2,19,606.25
The Firm should order 200 chairs each time as this will save ($2,27,144.51 - $2,19,606.25) = $7,538.26 each year.
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