A system has three components and all three components need to be operational from 8 AM to 5 PM; Monday to Friday. During a particular week, failure of component 3 occurred as follows:
Monday = 7 AM to 11 AM
Tuesday = No failure
Wednesday = 4 PM to 7 PM
Thursday = No failure
Friday = 12 PM to 2 PM
Saturday = 5 AM to 8 AM
Sunday = 6 PM to 9 PM
What is the availability of component 3 for this week?
A. 84.2%
B. 86.6%
C. 90.8%
D. 92.4%
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formula confusing for me..
8 AM until 5PM = 9 hours for 5 days
9×5 =45
45 – (3—–from 8 AM—-+0+1—-until 5PM—-0+2)= (45 -6) / 45 = 86.6%