Concept explainers
a
To determine:
Optimal order quantity for Colombian coffee.
Introduction:
Economic order quantity in the optimal inventory kept by any firm which is ideal and do not incur any additional holding cost and order cost.
b
To determine:
Time duration between placement of order.
Introduction:
Lead time is the time between when order is placed and its production is completed.
c
To determine:
Average annual cost of holding and set up cost
Introduction:
Holding cost is the cost incurred when goods are kept in warehouses without sale.
Setup cost is the fixed cost which is incurred for production process.
d
To determine:
Reorder level based on the on − hand inventory
Introduction:
On hand inventory is the stock of goods available to be sold to customers.
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Production and Operations Analysis, Seventh Edition
- Jill's Job Shop buys two parts (Tegdiws and Widgets) for use in its production system from two different suppliers. The parts are needed throughout the entire 52-week year. Tegdiws are used at a relatively constant rate and are ordered whenever the remaining quantity drops to the reorder level. Widgets are ordered from a supplier who stops by every three weeks. Data for both products are as follows: A. Find the total inventory costs if using inventory policy. This is a case considering safety stock (make sure to use the right formula)arrow_forwardAn importer operates a small warehouse that has the following annual costs. Wages for the purchasing agents are $45,000 per year, purchasing expenses are $30,000 per year, customs and brokerage costs are $30 per order, the cost of financing the inventory is 8%, storage costs are 7%, and the risk costs are 10%. The average inventory is $250,000 and 6,000 orders are placed in a year. What is the annual ordering costs (in dollars)? Your answer is an integer. how do you get Order & Carrying cost?arrow_forwardAn auto parts supplier sells Hardy-brand batteries to car dealers and auto mechanics. The annual demand is approximately 1,200 batteries. The supplier pays set up cost equal to $20 for each battery and estimates that the annual holding cost is $8.4. The working days for the company are 300 days per year Determine the economic order quantity (EOQ). b. How many orders will be placed per year using the EOQ? c. What is the expected time between orders? d. Determine the ordering, holding, and total inventory costs for the EOQarrow_forward
- Kabel Market store sells electric cable. The demand for cable is normally distributed. The inventory related information at Kabel Market is as follows: Average Annual Demand = 16,900 meters Standard deviation of weekly demand = 28 meters Cable selling price = AMD 640.00 per meter Ordering cost = AMD 1,250.00 per order Lead time = 5 weeks Annual inventory-holding cost estimate = 2.5% of the cable selling price Required service level = 95% Kabel Market works 52 weeks a year. Note: The approximate z values are: for 0.9 ≈ 1.28, for 0.92 ≈ 1.405, for 0.95 ≈ 1.645, for 0.98 ≈ 2.05. Suppose the bar management practices the fixed-QUANTITY ordering system with the use of the economic order quantity. Answer the following questions: (i) How many meters of cable they order from the supplier each time? (ii) When do they place an order? (iii) What is the safety stock?arrow_forwardThompson Paint Company uses 60,000 gallons of pigment per year. The cost of ordering pigment is $200 per order, and the cost of carrying the pigment in inventory is $1 per gallon per year. The firm uses pigment at a constant rate every day throughout the year. a. Calculate the EOQ. b. If it takes 20 days to receive an order once it has been placed, determine the reorder point in terms of gallons of pigment. (Note: Use a 365-day year.)arrow_forwardEOQ, reorder point, and safety stock Alexis Company uses 916 units of a product per year on a continuous basis. The product has a fixed cost of $60 per order, and its carrying cost is $3 per unit per year. It takes 5 days to receive a shipment after an order is placed, and the firm wishes to hold 10 days' usage in inventory as a safety stock. a. Calculate the EOQ. b. Determine the average level of inventory. (Note: Use a 365-day year to calculate daily usage.) c. Determine the reorder point. d. Indicate which of the following variables change if the firm does not hold the safety stock: (1) order cost, (2) carrying cost, (3) total inventory cost, (4) reorder point, (5) economic order quantity. a. Alexis' EOQ is units. (Round to the nearest whole number.)arrow_forward
- EOQ, reorder point, and safety stock Alexis Company uses 937units of a product per year on a continuous basis. The product has a fixed cost of $44 per order, and its carrying cost is $4 per unit per year. It takes 5 days to receive a shipment after an order is placed, and the firm wishes to hold 10 days' usage in inventory as a safety stock. a. Calculate the EOQ. b. Determine the average level of inventory. (Note: Use a 365-day year to calculate daily usage.) c. Determine the reorder point. d. Indicate which of the following variables change if the firm does not hold the safety stock: (1) order cost, (2) carrying cost, (3) total inventory cost, (4) reorder point, (5) economic order quantity.arrow_forwardA company operates for 50 weeks a year and uses a fixed quantity inventory system for one of its most important items. Below are the characteristics for the item: Weekly demand follows normal distribution: mean of 400 units and standard deviation of 100 units Order Cost = $40 per order Annual Holding cost = $2/unit/year Desired service level = 95% (z = 1.645) Lead Time = 4 weeks Economic Order Quantity (EOO) = 894 units Now suppose that the management is considering switching to a fixed time inventory system where the time between orders is 2 weeks. Everything else being the same as the information provided for the original problem, which system (Q or P system) is likely to have more safety stock? Please explain why.arrow_forwardAn auto parts supplier sells Hardy-brand batteries to car dealers and auto mechanics. The annual demand is approximately 1,200 batteries. The supplier pays $28 for each battery and estimates that the annual holding cost is 30 percent of the battery’s value. It costs approximately $20 to place an order (managerial and clerical costs). The supplier currently orders 100 batteries per month. a) Determine the ordering, holding, and total inventory costs for the current order quantity. b) Determine the economic order quantity(EOQ). c) How many orders will be placed per year using the EOQ? d) Determine the ordering, holding, and total inventory costs for the EOQ. How has ordering cost changed? Holding cost? Total inventory cost?arrow_forward
- Custom Computers, Inc. assembles custom home computer systems. The heat sinks needed are bought for $12 each and are ordered in quantities of 1300 units. Annual demand is 5200 heat sinks, the annual inventory holding cost rate is $3 per unit, and the cost to place an order is estimated to be $50. Calculate the following: (a) Average inventory level (b) The number of orders placed per year (c) The total annual inventory holding cost (d) The total annual ordering cost (e) The total annual costarrow_forwardSolve the following EOQ model problems:1. Each year, Y Company purchases 20,000 units of an item that costs P 640 per unit. The cost of placing an order is P 480, and the cost to hold the item in inventory for one year is P 150.a. Determine the EOQ. b. What is the average inventory level, assuming that the minimum inventory level is zero?c. Determine the total annual ordering cost and the total annual holding cost forthe item if the EOQ is used.2. A toy manufacturer uses approximately 32,000 silicon chips annually. The chips are used at a steady rate during the 240 days the plant operates. Annual holding cost is P27 per chip and ordering cost is P1,080. Lead time = 1 week.a. Find the EOQ.b. Find the reorder point.c. What would be your ordering policy for this item?d. Find the total annual cost of ordering and carrying silicon chips.3. A large bakery buys sugar in 50-kg bags. The bakery uses an average of 1,344 bags a year. Preparing an order and receiving a shipment of sugar involves a…arrow_forwardexplain the characteristics of inventory situations: 1. lead time 2. sources and level of risk 3. Static versus dynamic problemsarrow_forward
- Purchasing and Supply Chain ManagementOperations ManagementISBN:9781285869681Author:Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. PattersonPublisher:Cengage Learning