waiting time for a process

Question

 If  the waiting time for a process is p and there are n processes in the memory then the CPU utilization is given by,

a. p/n

b. p^n   (p raised to n)

c. 1-p^n

d. n-(p^n)  

Comments

No burst time for the processes given?

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https://gateoverflow.in/30223/cpu-utilization