# Schedule Model

Not what you're looking for?

Suppose you are waiting in line to check out at a grocery store and there are 7 other customers in front of you (so you are customer 8). By inspecting the amount of items in their baskets, you estimate the following check-out time in minutes:

Customer 1 2 3 4 5 6 7 8

Checkout time 10 5 3 7 5 10 2 5

a) What would be the scheduling model for this situation (environment, restriction, constraints) if you wish to minimize the total time in system? Use the appropriate scheduling notation.

b) Calculate the objective function value for the sequence of customers of 1 to 8 to minimize the total time in system. Draw a Gantt chart that shows completion time values.

##### Purchase this Solution

##### Solution Summary

The solution discusses what a schedule model would be like for the situation.

##### Solution Preview

a) In this problem, we have:

- a single machine (the lone cash register)

- eight jobs to be completed (j = 1 to 8 for cutomers 1 to 8)

- processing times t_j for each j (checkout times)

- completion times C_j for each j (waiting time plus checkout ...

##### Purchase this Solution

##### Free BrainMass Quizzes

##### Graphs and Functions

This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.

##### Exponential Expressions

In this quiz, you will have a chance to practice basic terminology of exponential expressions and how to evaluate them.

##### Probability Quiz

Some questions on probability

##### Geometry - Real Life Application Problems

Understanding of how geometry applies to in real-world contexts

##### Solving quadratic inequalities

This quiz test you on how well you are familiar with solving quadratic inequalities.