OPEARATIONS MANAG.REV CUSTOM 2017
OPEARATIONS MANAG.REV CUSTOM 2017
17th Edition
ISBN: 9781323590058
Author: Pearson
Publisher: PEARSON C
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Chapter 9, Problem 12P

Illinois Furniture, Inc., produces all types of office furniture. The “Executive Secretary” is a chair that has been designed using ergonomics to provide comfort during long work hours. The chair sells for $130. There are 480 minutes available during the day, and the average daily demand has been 50 chairs. There are eight tasks:

TASK PERFORMANCE TIME (MIN) TASK MUST FOLLOW TASK LISTED BELOW
A 4
B 7
C 6 A, B
D 5 C
E 6 D
F 7 E
G 8 E
H 6 F. G
  1. a. Draw a precedence diagram of this operation.
  2. b. What is the cycle time for this operation?
  3. c. What is the theoretical minimum number of workstations?
  4. d. Assign tasks to workstations.
  5. e. What is the idle time per cycle?
  6. f. How much total idle time is present in an 8-hour shift?
  7. g. What is the efficiency of the assembly line, given your answer in (d)?
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