Problem 6-5 (Algo)

***I only need help with section E of the question I have provided the entire question for reference to help figure out section E. Thank you!

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 250 units per 8-hour day. Task times and precedence relationships are as follows:

Task	Duration (minutes)	Immediate Predecessor
a	0.6	-
b	0.5	a
c	0.4	b
d	0.3	-
e	1.8	d
f	1.9	c
g	1.9	e, f

Do each of the following: a. Determine the number of followers for each task.

answers below are correct
Number of tasks following task a	4
Number of tasks following task b	3
Number of tasks following task c	2
Number of tasks following task d	2
Number of tasks following task e	1
Number of tasks following task f	1
Number of tasks following task g	0

b. Determine the minimum cycle time, the maximum cycle time, and the calculated cycle time. (Round all answers up to one decimal point. For example, round 1.83 up to 1.9.)

answers below are correct

Minimum cycle time	1.9	minutes per unit
Maximum cycle time	7.4	minutes per unit
Calculated cycle time	2.0	minutes per unit

c. Determine the minimum number of stations needed. (Use your rounded cycle time from Part b. Round up your answer to a whole number. Note that rounding up to one decimal point may reduce output to slightly less than 250 and this is fine.) Answer is correct

Minimum Number of Stations

4

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

answers below are correct

Work Stations	Following Tasks
I	a,b,c,d
II	e
III	f
IV	g

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

Idle Percentage		%
Efficiency		%