Why parallel architecture

Now which computer is fastest? For Computer A, the mean is 0.8 x 1 + 0.2 x 1000 = 200.8 100.9. For Computer B, the mean is 0.8 x 10 + 0.2 x 100 = 28 19. For Computer C, the mean is 20. Suppose we have these weightings: Program 1 is run 99% of the time. Program 2 is run 1% of the time. Now which computer is fastest? For Computer A, the mean is 10.99 ................
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