Help will be immediately rated. Need to understand these questions.

Question 1 5.25 pts A computer runs a round robin process scheduler with system contention scope and for a while there are 4 CPU intensive processes in the system, without doing any l/O operations. What is the percentage of the CPU utilization allocated to each process? Write just the percentage number, without the % sign. For example If the answer is 50%, write so, not 50% or 12 5.25 pts What statements about processor affinity are true? O It prevents a process from migrating (its execution) to another processor. O It reduces the number of context switches. It adversely impacts the scheduler overhead. O It increases the number of cache hits for accesses to main memory. Question 3 5.25 pts On a single-CPU system in steady state with 10 processes, the average waiting time is 0.5 seconds. What is the average arrival rate for new processes in the queue? Write just the rate number: eg. if the answer is 5 processes second, write just 5