Joe's Twenty-four Seven Laundromat has the following jobs waiting to be processed. The first step of the process includes washing and drying the clothes; the second step is pressing the clothing. Joe wants to minimize the amount of time it takes to do all the jobs.

The five jobs waiting to be processed are shown here.

Job wash and dry (hr) press (hr)

A. 5. 4

B. 3. 4

C. 2. 3

D. 7. 5

E. 4. 4

a. Using FCFS, assume the jobs arrive in the order shown (A, then B, then C, etc.). Show the beginning time for each job and ending time for the whole process adding hours throughout the process.

b. Calculate the makespan, the mean job flow time, and the average number of jobs in the system.

makespan=_____ hr

mean job flow time=______hr

avg. number of jobs in the system=______jobs

Using FCFS, assume the jobs arrive in the order shown ( A, then B, then C, etc). Show the beginning time for each job and ending Calculate the makespan, the mean job flow time, and the average number of jobs in the system. (Round mean job flow time to 1 decimal place, es. 1.5 and average number of jobs in the system to 2 decimal places, es. 1.75.) Makespan = Meanjobflow time = Average number of jobs in the system = Jobs