$($c & d$)$ Assume that there are two independent processes in a multiprogramming

system $($i$.$e$.,$ when a process blocks for I$/$O$,$ another process can get the CPU$)$ and each

process runs one iteration of the program above. Answer parts $($a$)$ and $($b$)$ for this case

showing which part belongs to which process. You can ignore the time spent in context

switching. $[12$ pts$]$