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 Task Must Follow (mins) Task Listed Below A 4 B 6 7 A, B 6 6 D UW UI F 8 E 8 E 6 F, G This exercise only contains parts b, c, d, e, f, and g. b) The cycle time for the production of a chair = minutes (round your response to two decimal places). b) The cycle time for the production of a chair = 8.89 minutes (round your response to two decimal places). c) The theoretical minimum number of workstations = 6 (round your response up to the next whole number). d) The assignment of tasks to workstations should be: (Hint: Number workstations sequentially in terms of precedence relationships and combine any applicable tasks.) Task Workstation Number A Station 1 B Station 2 с Station 3 D Station 4 E Station 5 F Station 6 G Station 7 H Station 8 Were you able to assign all the tasks to the theoretical minimum number of workstations? No e) For this process, the total idle time per cycle = 14 minutes (enter your response as a whole number). f) The total actual idle time at all workstations over the course of an 8-hour work day for the process = minutes (round your response to two decimal places).

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b)

Cycle time = Available time / Required production = 480 / 50 = 9..60 minutes

c)

Sum of the task times = (4+6+7+6+6+8+8+6) = 51 minutes
Cycle time = 9.6 minutes

So, the theoretical minimum number of stations = 51/9.6 = 5.3 i.e. 6 stations

d)

TaskWorkstation #
AStation-1
BStation-2
CStation-3
DStation-4
EStation-5
FStation-6
GStation-7
HStation-8

e)

The total idle time per cycle (considering the improved cycle time of 8 minutes) = 13 minutes per cycle

f)

Total idle time in 8 hours = 13 minutes per cycle * No. of cycles = 13 * (8*60 / Actual cycle time) = 13*8*60/8 = 780 minutes