Consider the following four processes with their corresponding arrival time and burst time:
$$\begin{array} \text{Process}&\text{Arrival time}&\text{Burst time(in ms)}\\ \text{P1}&0.0&8\\ \text{P2}&0.6&6\\ \text{P3}&3.8&4\\ \text{P4}&4.4&2\end{array}$$
What is the average turn around time (in ms) for these processes using FCFS scheduling algorithm?
- $15$
- $12.8$
- $13$
- none of the options