A system has three components and all three components need to be operational for 24 hours; Monday
through Friday. During a particular week, failure of component 3 occurred as follows:
Tuesday = 8 AM to 1 PM
Thursday = 5 PM to 10 PM
Friday = 5 AM to 10 AM
What is the mean time between failures on component 3 for that week?

A.
5 hours

B.
35 hours

C.
40hours

D.
51 hours

Explanation: