13. a. Three benchmark programs are executed on three computers with the following results: Computer C 90 120 50 Computer A Computer B Program 1 60 30 Program 2 50 70 Program 3 90 150 The table shows the execution time in seconds, with 6*108 instructions executed in each of the three programs. Calculate the MIPS values for each computer for each program. b. Following question 13.a calculate the arithmetic and geometric means assuming equal weights for the three programs, and rank the computers based on arithmetic mean and geometric mean. Comment on the ranking.

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