Question

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Answer 1

Answer:

Gantt chart will be something like :

p1---p2---p3---p4---p2---p3---p4---p3---p4

0----4---10---16---22---28---34---40---44---49

Processes  Burst time  Waiting time  Turn around time

1     4                 0            4

2    12                 16           28

3    16                 28         44

4    17                 32       49

Average waiting time = 19.0

Average turn around time = 31.25