4. Use the information in the table shown, do each of the following

1. Draw a precedence diagram.
2. Assuming an eight-hour workday, compute cycle time needed to obtain an output of 400 units perday.
3. Determine the minimum number of workstations required.
4. Assign tasks to workstation using this rule. Assign a tasks according to greatest number of following tasks. In case of a tie, use the tiebreaker of assigning the task with the longest processing time
5. Compute the resulting percent idle time and efficiency of the system.

Task	Immediate Predecessor	Task Time (in minutes)
A	-----	o.2
B	A	0.2
C	-----	0.8
D	C	0.6
E	B	0.3
F	D,E	1.0
G	F	0.3
H	G