Suppose a given control unit fails, on average, every 12,000 hours. It takes an average of 900 hours to repair and reboot this unit. The repair/reboot procedures for this unit are being reconfigured. By how much would average repair/reboot time need to be reduced to increase availability by 5 percent (assuming the control unit's average life remains unchanged)?

The repair/reboot time needs to be reduced by 600 hours so as to increase availability time by 5%.

Step-by-step explanation:

To increase availability by 5%, the amount of hours of availability is multiplied 105%.

therefore 1.05 × 12000 = 12600 hours

Therefore the repair/reboot time needs to be reduced by 600 hours.

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