The mean time to repair (MTTR) for a repairable system is 30 minutes. – McqOptions

MCQOPTIONS

1.	The mean time to repair (MTTR) for a repairable system is 30 minutes. When maintenance time changes from 20 minutes to 40 minutes, the net increase in maintainability is closest to
A.	0.15
B.	0.25
C.	0.45
D.	0.6
Answer» C. 0.45

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