$($a$)(12$ points$)$ Now consider the task set $\{(10,2),(12,6),(25,9,20)\},$ This task set is not

schedulable with the RM algorithm. We want to reduce the execution time of the task

with period $12$ to make the task system schedulable with the RM algorithm. How large

can the execution time of the task with period $12$ be$?$ Write a brief description of the

method you used to find this amount.

$($b$)(10$ points$)$ Consider the task set $\{(7,10,1,10),(12,6),(25,9)\}.$ Its total utilization is $0\mathrm{.}96.$

Is the task set schedulable with the RM algorithm? Explain how you reached your

conclusion.

I don't understand in the a part do I need perform Time demand analysis, if so how, what would be the value of t I will be considering?

and the second part, do I need to perfororm TDA for b part as well? Is there an easier way to do it$?$