00:01
So, the first process to arrive is a at time 0.
00:08
So a starts executing from time 0 to time 2.
00:14
The next process to arrive b is at time 1.
00:18
However, since a is already executing, b has to wait.
00:24
So from time 1 to time 2, a continues executing.
00:29
1 to 2, a continues.
00:31
Then at time 2, a finishes executing.
00:39
Since b is the only waiting process, b starts executing.
00:47
B starts executing from time 2 to time 7.
00:54
Because processing time of b is 5.
00:58
Then at time 3, process c arrives.
01:03
However, since b is already in execution, c has to wait.
01:16
And from time 3 to 7, b continues executing.
01:21
Now when b reaches at time 5, there is d which has to start at 5...