Question: Suppose that a given optimization speeds up ALU operations by a factor of 2 . If the ALU operations collectively account for 5 0 %

Suppose that a given optimization speeds up ALU operations by a factor of 2. If the ALU operations collectively account for 50% of the
execution time AFTER the optimization, what is the overall speedup? What fraction of execution time did ALU operations take up BEFORE the
optimization?

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