Q54

Consider a CPU that has to execute two types of processes. The first type, Actuators (A), requires a CPU burst of $6$ seconds. The second type, Controllers (C), requires a CPU burst of $8$ seconds. A new process of type A arrives at time $t=10$, $20, 30, 40$, and $50$ (in seconds). Similarly, a new process of type C arrives at time $t=$ $11, 22, 33, 44$, and $55$ (in seconds). The CPU scheduling policy is First Come First Serve (FCFS). The first process of type A starts running at $t=10$ seconds. The average waiting time (in seconds) for the $10$ processes is $\_\_\_\_\_\_\_$. (rounded off to one decimal place)