1. Inventory information for firm ABC:
Inventory at the end of March, 1999: 200 units
Expected demand during April, 1999: 50 units
Production expected during April, 1999: 100 units
What is the expected inventory at the end of April, 1999?
A) 350
B) 250
C) 150
D) 50
E) none of the aboveUse the following to answer questions:The owner/operator of the local franchise of Handyman, Inc., has four jobs to do today, shown in the order they were received:JOB PROCESSING
TIME (hours) DUE
(hours)
W 4 4
X 3 5
Y 2 2
Z 1 1 2. If he uses the first come, first served (FCFS) priority rule to schedule these jobs, what will be the average completion time?
A) 7.5 hours
B) 5 hours
C) 3 hours
D) 2.5 hours
E) 2 hours 3. If he uses the earliest due date first (EDD) priority rule to schedule these jobs, what will be the average job tardiness?
A) 0 hours
B) 1.5 hours
C) 1.75 hours
D) 2 hours
E) 2.25 hours 4. If he uses the shortest processing time first (SPT) priority rule to schedule these jobs, what will be the average completion time?
A) 7.5 hours
B) 5 hours
C) 3 hours
D) 2.5 hours
E) 2 hours
5. If he uses the shortest processing time first (SPT) priority rule to schedule these jobs, what will be the average job tardiness?
A) 0 hours
B) 1.5 hours
C) 1.75 hours
D) 2 hours
E) 2.25 hours
6. If he uses the shortest processing time first (SPT) priority rule to schedule these jobs, what will be the average number of jobs in his shop today?
A) 0
B) 1
C) 2
D) 3
E) 4
7. The following table lists the components needed to assemble an end item, their lead-times, and quantities on-hand.
Item End H K M P W S B
LT(wk.) 2 4 3 3 1 2 1 1
Am't on-hand 0 15 30 30 10 30 100 0
A) If 50 units of the end item are to be assembled, how many additional units of S will be needed? All parts can be ordered using lot-for lot ordering, except M, which must be ordered in multiples of 40 units.
B) An order for the end item is scheduled to be shipped at the start of week 9. When is the latest week that the initial component of this order can be started and still be ready to ship? Use the following to answer questions:Given the following data for jobs awaiting processing at a manufacturing cell in which jobs are first processed by machine A, then by Machine B: TIME (hours)
JOB Center A Center B
W 4 5
X 6 6
Y 1 2
Z 5 2 8. If these jobs were scheduled in the sequence shown, what would be the throughput time?
9. In developing the sequence that will minimize throughput time, where in the schedule sequence should the initial job, W, be placed? 10. What is the sequence which will minimize throughput time? 11. What is the throughput time for the optimum schedule?