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A uniprocessor computer system has three processes, which alternate 20ms CPU bursts with 80ms I/O bursts. All the processes were created at nearly the same time. The I/O of all the processes can proceed in parallel. The absolute difference of CPU utilization (over a long period of time) using FCFS and Round Robin (time quantum 10ms) for this system is _____ %
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This is an old GATE 2003 question.
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