solve the problem for supply mangement

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bus_370_homework_1.docx

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Introduction to Supply Chain Management
Problem 1: Line Balancing (11 points)
First shift employees at GE Appliances work from 2pm-10pm Monday through Friday assembling
washing machines. Everyone on the assembly line is allowed a 30 minute lunch and two 15 minute
breaks. The assembly line stops while associates are on lunch or break. The processes of the assembly
line have the following dependencies:
Task
A
B
C
D
E
F
G
Predecessor
none
none
A
B
D
E
C, F
Average Time (sec)
30
15
20
15
10
10
30
The Plant Manager needs first shift to achieve an output of 600 washing machines each day.
a) Compute the Takt time for the line (2 points).
b) What is the theoretical minimum number of workstations? (2 points)
c) Draw the precedence diagram, and then create work stations. Follow the ?most following tasks?
heuristic rule to assign these tasks to the work stations. Show which tasks are assigned to each
workstation (3 points).
d) Compute the efficiency and percent idle time for the system (2 points).
e) What is the maximum output that could be achieved by a single assembly line in 7 hours? (2
points)
Problem 2: Line Balancing (8 points)
An assembly line has a production time of 20 hours/day and required output of 500 units per day. Tasks
are assigned to workstations in the following manner.
Workstation #1
B 60 sec
Workstation #2
A 40 sec
Workstation #3
G 40 sec
Workstation #4
H 60 sec
C 30 sec
F 30 sec
E 30 sec
D 30 sec
J 40 sec
K 30 sec
I 50 sec
a) Calculate the idle time (in seconds) incurred for each unit produced on the assembly line (2
points).
b) Calculate the percent idle time for the assembly line (2 points).
c) Calculate the efficiency for the assembly line (2 points).
d) Which workstation will have the most idle time? (2 points)
Problem 3: Supplier Selection (6 points)
Your sourcing department has received bids from three suppliers shown below.
PERFORMANCE
DIMENSION
IMPORTANCE
Supplier 1
Supplier 2
Supplier 3
On Time Delivery (% on
time)
Financial Stability (rating)
Cost ($/unit)
0.50
92%
99%
85%
0.10
0.40
AA
$4.18/unit
A
$4.38/unit
AAA
$3.99/unit
a) Score each supplier?s bid using the following scale (3 points).
On Time Delivery
Range
Score
<90% 1 91%-92% 2 93%-95% 3 96%-98% 4 99% 5 Financial Stability Rating Lower than BBB BBB A AA AAA Cost Score 1 2 3 4 5 Range >$4.35 per unit
$4.26-$4.35 per unit
$4.16-$4.25 per unit
$4.00-4.15 per unit
<$4.00 per unit b) Calculate the weighted average score for each supplier (3 points). Score 1 2 3 4 5 ... Purchase answer to see full attachment

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