For the set of tasks given below, do the following:

Task             Task Time(seconds)   Immediate Predecessor

A                  45                                          -

B                  11                                         A

C                  9                                         B

D                  50                                         -

E                  26                                         D

F                  11                                          E

G                 12                                         C

H                 10                                         C

I                  9                                      F, G, H

J                  10                                           I

                             193                      

_______________________________________

b. Determine the minimum and maximum cycle times in seconds for a desired output of 500 units in a seven-hour day. (Round your answers to 1 decimal place.)

The minimum cycle time              seconds

The maximum cycle time             seconds

________________________________________

c. Determine the minimum number of workstations for output of 500 units per day. (Round up your answer to the next whole number.)

Minimum number of workstations             

d. Balance the line using the greatest positional weight heuristic. Break ties with the most following tasks heuristic. Use a cycle time of 50 seconds.

Work stations            Following Tasks

I                              

II                             

III                            

IV                            

V                             

________________________________________

e. Calculate the percentage idle time for the line using the 50 second cycle time. (Round your answer to 1 decimal place. Omit the "%" sign in your response.)

Percentage of idle time %