Petromax Enterprises uses a continuous review inventory control system for one of its SKUs. The following information is available on the item. The firm operates 48 weeks in a year. Refer to the table for z-values. ≻Demand = 91,000 units/year ≻Ordering cost = $38.50/order ≻Holding cost = $4.50/unit/year ≻Average lead time = 9 weeks ≻Standard deviation of weekly demand = 120 units a. The economic order quantity for this item is _____ units. (Enter your response rounded to the nearest whole number.) b. If Petromax wants to provide a 90% service level, the safety stock is _____ units (enter your response rounded to the nearest whole number) and the reorder point is ____units (enter your response rounded to the nearest whole number).

Purchasing and Supply Chain Management
6th Edition
ISBN:9781285869681
Author:Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. Patterson
Publisher:Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. Patterson
Chapter16: Lean Supply Chain Management
Section: Chapter Questions
Problem 10DQ: The chapter presented various approaches for the control of inventory investment. Discuss three...
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3. Petromax Enterprises uses a continuous review inventory control system for one of its SKUs. The following information is available on the item. The firm operates 48 weeks in a year. Refer to the table for z-values. ≻Demand = 91,000 units/year ≻Ordering cost = $38.50/order ≻Holding cost = $4.50/unit/year ≻Average lead time = 9 weeks ≻Standard deviation of weekly demand = 120 units a. The economic order quantity for this item is _____ units. (Enter your response rounded to the nearest whole number.) b. If Petromax wants to provide a 90% service level, the safety stock is _____ units (enter your response rounded to the nearest whole number) and the reorder point is ____units (enter your response rounded to the nearest whole number).
Petromax Enterprises uses a continuous review inventory control system for one of its SKUS. The following information is available on the item. The firm operates
ad
48 weeks in a year. Refer to the standard normal table for z-values.
> Demand = 91,000 units/year
> Ordering cost = $38.50/order
> Holding cost = $4.50/unit/year
>Average lead time = 9 weeks
> Standard deviation of weekly demand = 120 units
at
ile
Les
a. The economic order quantity for this item is units. (Enter your response rounded to the nearest whole number.)
nsa
b. If Petromax wants to provide a 90% service level, the safety stock is
units (enter your response rounded to the nearest whole number) and the reorder point is
units (enter your response rounded to the nearest whole number).
te M
Transcribed Image Text:Petromax Enterprises uses a continuous review inventory control system for one of its SKUS. The following information is available on the item. The firm operates ad 48 weeks in a year. Refer to the standard normal table for z-values. > Demand = 91,000 units/year > Ordering cost = $38.50/order > Holding cost = $4.50/unit/year >Average lead time = 9 weeks > Standard deviation of weekly demand = 120 units at ile Les a. The economic order quantity for this item is units. (Enter your response rounded to the nearest whole number.) nsa b. If Petromax wants to provide a 90% service level, the safety stock is units (enter your response rounded to the nearest whole number) and the reorder point is units (enter your response rounded to the nearest whole number). te M
g cost = $38.50/order
e le
Data Table
ic
The table below shows the total area under the normal curve for a point that is Z standard deviations to the
right of the mean.
wa
yo
0.00
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.5000 0.5040 0.5080 0.5120 0.5160 0.5199 0.5239 0.5279 0.5319 0.5359
0.5398 0.5438 0.5478 0.5517 0.5557 0.5596 0.5636 0.5675 0.5714 0.5754
0.5793 0.5832 0.5871 0.5910 0.5948 0.5987 0.6026 0.6064 0.6103 0.6141
0.6179 0.6217 0.6255 0.6293 0.6331 0.6368 0.6406 0.6443 0.6480 0.6517
0.6554 0.6591 0.6628 0.6664 0.6700 0.6736 | 0.6772 0.6808 0.6844 0.6879
0.6915 0.6950 0.6985 0.7019 0.7054 0.7088 0.7123 0.7157 0.7190 0.7224
0.7258 0.7291 0.7324 0.7357 0.7389 0.7422 0.7454 0.7486 0.7518 0.7549
0.7580 0.7612 0.7642 0.7673 0.7704 0.7734 0.7764 0.7794 |0.7823 0.7852
0.7881 0.7910 0.7939 0.7967 0.7996 0.8023 0.80510.8079 0.8106 0.8133
0.8159 0.8186 0.8212 0.8238 0.8264 0.8289 0.8315 0.8340 0.8365 0.8389
0.8413 0.8438 0.8461 0.8485 0.8508 0.8531 0.8554 0.8577 0.8599 0.8621
0.8643 0.8665 0.8686 0.8708 0.8729 0.8749 0.8770 | 0.8790 | 0.8810
0.8849 0.8869 0.8888 0.8907 0.8925 0.8944 0.8962 0.8980 0.8997 0.9015
0.9032 0.9049 0.9066 0.9082 0.90990.9115 0.9131 0.91470.9162 0.9177
0.9192 0.9207 0.9222 0.9236 0.9251 0.9265 0.9279 0.9292 | 0.9306 0.9319
0.9332 0.9345 0.9357 0.9370 0.9382 0.9394 0.9406 0.9418| 0.9430 | 0.9441
0.9452 0.9463 0.9474 0.9485 0.9495 0.9505 0.9515 0.9525 0.9535 0.9545
0.9554 0.9564 0.9573 0.9582 0.95910.9599 0.9608 0.9616 |0.9625 0.9633
0.9641 0.9649 0.9656 0.9664 0.9671 0.9678 0.9686 0.9693 0.9700 0.9706
0.9713 0.9719 0.9726 0.9732 0.9738 | 0.9744 0.9750 0.9756 0.9762 0.9767
0.9773 0.9778 0.9783 0.9788 0.9793 0.9798 0.9803 0.9808 0.9812 0.9817
0.9821 0.9826 0.9830 0.9834 0.9838 0.9842 0.9846 0.9850 0.9854 0.9857
0.9861 0.9865 0.9868 0.9871 0.9875 0.9878 0.9881 0.9884 |0.9887 0.9890
2.3
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
0.8830
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
0.9893 0.9896 | 0.9898 0.9901 0.9904 0.9906 0.9909 0.9911 0.9913 0.9916
0.9918 0.9920 0.9922 0.9925 0.9927 |0.9929 0.9931 0.9932 0.9934 0.9936
0.9938 0.9940 | 0.9941 0.9943 0.9945 0.9946 0.9948 0.9949 0.9951 0.9952
0.9953 0.9955 0.9956 0.9957 0.9959 0.9960 0.99610.9962 0.9963 0.9964
0.9965 0.9966 0.9967 0.9968 0.9969 0.9970 0.9971 |0.9972 0.9973 0.9974
0.9974 0.9975 0.9976 0.9977 0.9977 | 0.9978 0.9979 0.9980 0.9980 0.9981
0.9981 0.9982 0.9983 0.9983 0.9984 0.9984 0.9985 0.9985 0.9986 0.9986
0.9987 0.9987 0.9987 | 0.9988 0.9988 0.9989 0.9989 0.9989 0.9990 0.9990
0.9990 0.9991 0.9991 0.9991 0.9992 0.9992 0.9992 0.9992 0.9993 0.9993
0.9993 0.9993 0.9994 0.9994 0.9994 0.9994 0.9994 0.9995 0.9995 0.9995
0.9995 0.9995 0.9995 0.9995 0.9996 0.9996 0.9996 0.9996 0.9996 0.9997
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
Print
Done
Transcribed Image Text:g cost = $38.50/order e le Data Table ic The table below shows the total area under the normal curve for a point that is Z standard deviations to the right of the mean. wa yo 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.5000 0.5040 0.5080 0.5120 0.5160 0.5199 0.5239 0.5279 0.5319 0.5359 0.5398 0.5438 0.5478 0.5517 0.5557 0.5596 0.5636 0.5675 0.5714 0.5754 0.5793 0.5832 0.5871 0.5910 0.5948 0.5987 0.6026 0.6064 0.6103 0.6141 0.6179 0.6217 0.6255 0.6293 0.6331 0.6368 0.6406 0.6443 0.6480 0.6517 0.6554 0.6591 0.6628 0.6664 0.6700 0.6736 | 0.6772 0.6808 0.6844 0.6879 0.6915 0.6950 0.6985 0.7019 0.7054 0.7088 0.7123 0.7157 0.7190 0.7224 0.7258 0.7291 0.7324 0.7357 0.7389 0.7422 0.7454 0.7486 0.7518 0.7549 0.7580 0.7612 0.7642 0.7673 0.7704 0.7734 0.7764 0.7794 |0.7823 0.7852 0.7881 0.7910 0.7939 0.7967 0.7996 0.8023 0.80510.8079 0.8106 0.8133 0.8159 0.8186 0.8212 0.8238 0.8264 0.8289 0.8315 0.8340 0.8365 0.8389 0.8413 0.8438 0.8461 0.8485 0.8508 0.8531 0.8554 0.8577 0.8599 0.8621 0.8643 0.8665 0.8686 0.8708 0.8729 0.8749 0.8770 | 0.8790 | 0.8810 0.8849 0.8869 0.8888 0.8907 0.8925 0.8944 0.8962 0.8980 0.8997 0.9015 0.9032 0.9049 0.9066 0.9082 0.90990.9115 0.9131 0.91470.9162 0.9177 0.9192 0.9207 0.9222 0.9236 0.9251 0.9265 0.9279 0.9292 | 0.9306 0.9319 0.9332 0.9345 0.9357 0.9370 0.9382 0.9394 0.9406 0.9418| 0.9430 | 0.9441 0.9452 0.9463 0.9474 0.9485 0.9495 0.9505 0.9515 0.9525 0.9535 0.9545 0.9554 0.9564 0.9573 0.9582 0.95910.9599 0.9608 0.9616 |0.9625 0.9633 0.9641 0.9649 0.9656 0.9664 0.9671 0.9678 0.9686 0.9693 0.9700 0.9706 0.9713 0.9719 0.9726 0.9732 0.9738 | 0.9744 0.9750 0.9756 0.9762 0.9767 0.9773 0.9778 0.9783 0.9788 0.9793 0.9798 0.9803 0.9808 0.9812 0.9817 0.9821 0.9826 0.9830 0.9834 0.9838 0.9842 0.9846 0.9850 0.9854 0.9857 0.9861 0.9865 0.9868 0.9871 0.9875 0.9878 0.9881 0.9884 |0.9887 0.9890 2.3 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 0.8830 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 0.9893 0.9896 | 0.9898 0.9901 0.9904 0.9906 0.9909 0.9911 0.9913 0.9916 0.9918 0.9920 0.9922 0.9925 0.9927 |0.9929 0.9931 0.9932 0.9934 0.9936 0.9938 0.9940 | 0.9941 0.9943 0.9945 0.9946 0.9948 0.9949 0.9951 0.9952 0.9953 0.9955 0.9956 0.9957 0.9959 0.9960 0.99610.9962 0.9963 0.9964 0.9965 0.9966 0.9967 0.9968 0.9969 0.9970 0.9971 |0.9972 0.9973 0.9974 0.9974 0.9975 0.9976 0.9977 0.9977 | 0.9978 0.9979 0.9980 0.9980 0.9981 0.9981 0.9982 0.9983 0.9983 0.9984 0.9984 0.9985 0.9985 0.9986 0.9986 0.9987 0.9987 0.9987 | 0.9988 0.9988 0.9989 0.9989 0.9989 0.9990 0.9990 0.9990 0.9991 0.9991 0.9991 0.9992 0.9992 0.9992 0.9992 0.9993 0.9993 0.9993 0.9993 0.9994 0.9994 0.9994 0.9994 0.9994 0.9995 0.9995 0.9995 0.9995 0.9995 0.9995 0.9995 0.9996 0.9996 0.9996 0.9996 0.9996 0.9997 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 Print Done
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