Question: For a certain program Load instructions represent 2 0 % of the total instruction count, and take 4 cycles to be completed. ( a )

For a certain program Load instructions represent 20% of the total instruction
count, and take 4 cycles to be completed.
(a) If the average CPI for all the other instructions is 3, what is the average
CPI of the program?
(b) What fraction of time do load instructions represent?
(c) What is the speedup if the CPI can be reduced to 2 for load instructions?

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