A program contains a single loop that executes 50 times. The loop includes a computation that lasts 50 ms followed by an I/O operation that consumes 200 ms. Ten independent executions of this program are started at the same time. The scheduling overhead of the kernel is 3 ms. Compute the response time of the first process in the first and subsequent iterations if

a. The time slice is 50 ms.
b. The time slice is 20 ms.