In a computing center there are four types of jobs according to their
arrival times (in seconds), their priorities and their run times (in seconds);
see the table below:
-----------------Type 1------ Type 2---- Type 3---- Type 4
arrival time--- 40 ---------- 50 -------- 40--------- 0
priority---------- 1 ---------- 1---------- 0---------- 0
run time------ 1 ------------ 2--------- 1---------- 2
There are 20 Type 1 jobs, 40 Type 2 jobs, 60 Type 3 jobs and 80
Type 4 jobs. Compute the average turnaround time using the multilevel
queues (round robin on every priority level — the higher the
priority, the sooner they run) scheduling algorithm.
[please use a quantum that provides short response time.]
