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Suppose two jobs ,each of which needs 10 min of CPU time ,start simultaneously. assume 50% I/O... | ISRO 2015

Q. suppose two jobs ,each of which needs 10 min of CPU time ,start simultaneously. assume 50% I/O  wait time how long will it take for both to complete if they sequentially?

Options:
a) 10
b) 20
c) 30
d) 40

1Comment
kn nk @knkn
18 Jun 2016 08:47 pm

It will take 20 mins if they is no preemption and if preemption is done then it would be 15 mins.

But as per question, the answer should be b). 20