Three processes A$,$ B and C each execute a loop of $100$ iterations. In each iteration

of the loop, a process performs a single computation that requires tc CPU

milliseconds and then initiates a single I$/$O operation that lasts for tio milliseconds.

It is assumed that the computer where the processes execute has sufficient number

of I$/$O devices and the OS of the computer assigns different I$/$O devices to each

process. Also, the scheduling overhead of the OS is negligible. The processes have

the following characteristics:

Process id tc tio

A $100$ ms $500$ ms

B $350$ ms $500$ ms

C $200$ ms $500$ ms

The processes A$,$ B$,$ and C are started at times $0,5$ and $10$ milliseconds

respectively, in a pure time$-$sharing system $($round robin scheduling$)$ that uses a

time slice of $50$ milliseconds. The time in milliseconds at which process C would

complete its first I$/$O operation is