Four processes, P1, P2, P3, and P4, arrive at T=0, T=2, T=4,…

Four processes, P1, P2, P3, and P4, arrive at T=0, T=2, T=4, and T=6 ms, respectively, with CPU burst times of 10 ms, 5 ms, 2 ms, and 8 ms. What is the Average Waiting Time (in ms) using Non-Preemptive First-Come, First-Served (FCFS) scheduling? Enter the numerical value.