A drilling machine has a mean time between failures of 368 hours and mean time to repair of 9 hours.In this case,the availability is ______.
A)97.6%
B)89.7%
C)78.9%
D)93.8%

Question

Quizplus · Accepted Answer

The formula for availability is:
Availability = (MTBF / (MTBF + MTTR)) X 100%

Plugging in the values given in the question, we get:
Availability = (368 / (368 + 9)) X 100%
= 97.6%

Therefore, the answer is choice A, which is 97.6%.

A Drilling Machine Has a Mean Time Between Failures of 368