Suppose a workstation has a clock rate of 25 MHz, which means that the machine is capable of performing 25 million basic operations per second. For example, a register test instruction might take just 1 clock cycle, but an arithmetic instruction might require 10 clock cycles, while an I/O instruction might require hundreds.

a. What is the time duration of one basic operation?

b. Assuming the average instruction takes 2.5 clock cycles, how many instructions can be executed in 100 microseconds?