Consider the processes described below:

$(10$pts$)$ what is the average turnaround time using SJF $($use FIFO as tie$-$

breaker if necessary$)($e$.$g$.x.?$

$(10$pts$)$ what is the average turnaround time using SRT $($use FIFO as tie$-$

breaker if necessary$)($e$.$g$.x.x?$

$(10$pts$)$ what is the average turnaround time using RR with $Q=4($use FIFO as

tie$-$breaker if necessory$)($e$.$g$.x.x?$