6-4)

A manager wants to assign tasks to workstations as efficiently as possible, and achieve an hourly output of 4 units. The department uses a working time of 56 minutes per hour. Assign the tasks shown in the accompanying precedence diagram (times are in minutes) to workstations using the following rules:

a.	In order of most following tasks. Tiebreaker: greatest positional weight.

Work Station	Tasks
I	(Click to select)E, HD, B, CF, A, GA, GI
II	(Click to select)D, B, CIF, A, GE, HD
III	(Click to select)IF, A, GHE, HD, B, C
IV	(Click to select)B,EF, A, GE, HHI

b.	In order of greatest positional weight.

Work Station	Tasks
I	(Click to select)C, DG, HD, CF, GF, D
II	(Click to select)F, A, GG, A, BE, HG, HB, C
III	(Click to select)AB,EC, EF, GD, C, F
IV	(Click to select)H, IGAB,EH

c.	What is the efficiency?(Round your answer to 2 decimal places. Omit the "%" sign in your response. )

Efficiency

%