The Operations Manager of a Body and Paint Shop Has

question 99

Essay

The operations manager of a body and paint shop has five cars to schedule for repair. He would like to minimize the throughput time (makespan) to complete all work on these cars. Each car requires body work prior to painting. The estimates of the times required to do the body and paint work on each are as follows:
a. Chart the progress of these five jobs through the two centers on the basis of the arbitrary order
A→B→C→D→E.
b. After how many hours will all jobs be completed?
c. Use Johnson's rule to sequence these five jobs for minimum total duration. Show your work in
determining the job sequence.
d. The optimal sequence is __________.
e. Chart the progress of the five jobs in this optimal sequence.
f. After how many hours will all jobs be completed?

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Definitions:

Short-run Shut-down Price

The price level at which a firm's total revenue is equal to its variable costs, below which it should cease operations.

Short-run Supply Curve

Represents the relationship between the price of a good and the quantity supplied over a short period, during which at least one input is fixed.

Marginal Cost Curve

A graphical representation of the change in total cost that arises when the quantity produced changes by one unit.

Average Variable Cost Curve

A graph that shows how the average variable cost of production changes as the quantity of output changes.