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Combined failure rate of system A and B?

by -EquinoX-
Tags: percentage
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Sep28-09, 09:59 PM
P: 577
1. The problem statement, all variables and given/known data

If I have two system A with failure rate of X and two system B with failure rate of Y then what would be the combined failure rate of system A and B?

2. Relevant equations

3. The attempt at a solution

I know how to find the combined failure rate of A and the combined failure rate of B.
So I just add them and divide by 2?
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