Shivam Kasat too much calculation. never going to ask like this in gate.
dont whether calculation. correct or not of mine
general view ------
in case of non premptive we have 4 context switches and as 5 process burst time .....
so 5B + 4 C = 24 hours (24 *60*60 )s
in case of preemptive
context switches of process = B / tq=n
.. where B=burst time , tq = time quantam
so in case of preemptive
4 C ( as 1st time only 4 context switches ) + 5 (n-1)C +5 B = 24 *60*60 + 2* 60 ....
substitute values up above like lasst we get $ C^2$ compute it .
i am not sure about my calc.......so