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Consider an operating systems using round robin for scheduling with quantum size 3 - RR(3). What is the mean turnaround time for the following set

Consider an operating systems using round robin for scheduling with quantum size 3 - RR(3). What is the mean turnaround time for the following set of processes, considered the noted arrival times and CPU time requirements?

Proc: A B C D

Arrive: 0 2 4 5

CPU: 5 4 3 7

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