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Please solve the following problem related to Chapter 6 

1.     As part of a major plant renovation

project, the industrial engineering department has been asked to balance a revised assembly operation to achieve an output of 240 units per eight-hour day. Task times and precedence relationships are as follows:


Task

Duration (minutes)

Immediate Predecessor

A

0.3

-

B

0.5

A

C

0.4

B

D

0.5

-

E

1.7

D

F

0.8

C

G

1.2

E, F


How to do each of the following?


a.     Draw the precedence diagram.

b.    Determine the minimum cycle time, the maximum cycle time, and the calculated cycle time.

c.     Determine the minimum number of stations needed.

d.    Assign tasks to workstations on the basis of most following tasks. Use longest processing time as a tiebreaker. If ties still exist, assume indifference in choice.

e.     Compute the percentage of idle time for the assignment in part d.

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