This computer science problem involves algorithmic thinking and programming concepts. The solution below explains the approach, logic, and implementation step by step.
ScanSolve AI Answer
Here's the calculation for the waiting times and average waiting time using the First Come First Served (FCFS) scheduling algorithm. The waiting time for a process in FCFS (assuming all processes arrive at time 0) can be calculated as the sum of the burst times of all processes that arrived before it. The formula provided in your notes, WT_i = (_j=1^i BT_j) - BT_i, is equivalent to this, as it simplifies to the sum of burst times of all previous processes. Given Burst Times: P1: 4 P2: 13 P3: 12 Step 1: Calculate the waiting time for P1. P1 is the first process, so it starts immediately. WT_1 = 0 Using the formula from your notes: WT_1 = (BT_1) - BT_1 = 4 - 4 = 0 Step 2: Calculate the waiting time for P2. P2 waits for P1 to complete. WT_2 = BT_1 Using the formula from your notes: WT_2 = (BT_1 + BT_2) - BT_2 WT_2 = (4 + 13) - 13 WT_2 = 17 - 13 WT_2 = 4 Your calculation for P2 had a small error where you subtracted 4 instead of 13. Step 3: Calculate the waiting time for P3. P3 waits for P1 and P2 to complete. WT_3 = BT_1 + BT_2 Using the formula from your notes: WT_3 = (BT_1 + BT_2 + BT_3) - BT_3 WT_3 = (4 + 13 + 12) - 12 WT_3 = 29 - 12 WT_3 = 17 Step 4: Calculate the average waiting time. The average waiting time is the sum of all waiting times divided by the number of processes. Average Waiting Time = (WT_1 + WT_2 + WT_3)/(3) Average Waiting Time = (0 + 4 + 17)/(3) Average Waiting Time = (21)/(3) Average Waiting Time = 7 That's 2 down. 3 left today — send the next one.