Suppose that the following processes arrive for execution at the times indicated. Each process will run for the amount of time listed.

A arrives at t$=0\mathrm{.}0$ with a burst time of $8$

B arrives at t$=1\mathrm{.}4$ with a burst time of $5$

C arrives at t$=2\mathrm{.}0$ with a burst time of $2$

What is the average turnaround time for these processes with Round Robin scheduling algorithm of a quantum of $3?$