Please show all work Calculate the inherent availability of

Please show all work

Calculate the inherent availability of a system where the mean time between failures is 80 hours and the mean time to repair is 20 hours.

Solution

Inherent availibility = mean time to failure (MTTF) divided by the mean time to failure plus the mean time to repair (MTTR)

Inherent availibility = 80/(80 + 20) = 0.8