$16.$ Consider the set of $6$ processes whose arrival and burst times are given below.

$\backslash$begin$\{$tabular$\}\{|$c$|$c$|$c$|$c$|\}$

$\backslash$hline Process & $\backslash$begin$\{$tabular$\}\{$c$\}$

Arrival $\backslash \backslash$

Time

$\backslash$end$\{$tabular$\}$ & $\backslash$begin$\{$tabular$\}\{$c$\}$

Burst $\backslash \backslash$

Time

$\backslash$end$\{$tabular$\}$ & $\backslash$begin$\{$tabular$\}\{$c$\}$

Queue $\backslash \backslash$

Number

$\backslash$end$\{$tabular$\}\backslash \backslash$

$\backslash$hline P$1$ & $0$ & $4$ & $1\backslash \backslash$

$\backslash$hline P$2$ & $0$ & $3$ & $1\backslash \backslash$

$\backslash$hline P$3$ & $0$ & $8$ & $2\backslash \backslash$

$\backslash$hline P$4$ & $10$ & $5$ & $1\backslash \backslash$

$\backslash$hline

$\backslash$end$\{$tabular$\}$

draw gant chart and Calculate the average waiting and turnaround times given that Queue Number $($QN$)1$ will be scheduled with RR of Quantum $2$ and QN $2$ will be scheduled as FCFS$.$