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Start -> A -> B -> C -> D -> E -> Finish. You have the following process information: Process A requires 10 minutes per widget. Process B does 4 widgets per hour. Process C does 4.6 widgets per hour. Process D can do 28 widgets per 8-hour shift. Process E takes 16 minutes per widget. What is the process time of the system? minutes per widget. (Please round to the nearest integer; if you would like to enter 12.345, please type in a 12.) Which process is the bottleneck? If you tied yourself to a widget just as it started Process A, how many minutes later would you find yourself done with Process E? minutes. (Please round to the nearest integer; if you would like to enter 12.345, please type in a 12. Hint: this is another way of asking for the throughput time.) Would it help make more widgets per day if we could speed up Process A by one minute per widget? . (Please enter yes or no). Say we didn't end up changing Process A after all. If we could speed Process D up by 5 minutes per widget, what would the new process time of the system be? minutes. (Please round to the nearest integer; if you would like to enter 12.345, please type in a 12.) Say we did speed up Process D by those 5 minutes per widget. Where is the bottleneck of the system now?

Respuesta :

Hourly output of different processes

A = 60/10 =6 per hour

B= 4 per hour

C = 4.6 per hour

D= 28/8 =3.5 per hour

E= 60/16 = 3.75 per hour

(i) Process time of the system is constrained by bottleneck resource ( D with lowest output of 3.5 per hour)

Process time = 60/ capacity per hour = 60/3.5 =17.1428

(ii) D is bottleneck

(iiii) Time for entire process = 60/6+60/4+60/4.6+60/3.5+60/3.75

     10+15+13.043+17.1428+16

=71.1858 min.

(iv) No, because A is not the bottleneck

(v) New capacity of bottleneck resource will be 60/(17.1428-5) =4.9411

However the new bottleneck will now be E with an output of 3.75 per hour.

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