CPU Scheduling - General Questions

Using FCFS scheduling, what is the average waiting time for these processes (all arrive at time 0, in order)?

Process  Burst
P1       8
P2       2
P3       3
P4       3

Using SJF (non-preemptive) scheduling, what is the average waiting time for these processes?

Process  Arrival  Burst
P1       0        2
P2       0        9
P3       2        4

Using SJF (non-preemptive) scheduling, what is the average waiting time for these processes?

Process  Arrival  Burst
P1       0        5
P2       2        4
P3       0        10

Turnaround time is:

Using FCFS scheduling, what is the average waiting time for these processes (all arrive at time 0, in order)?

Process  Burst
P1       2
P2       2
P3       2
P4       2