You are hired by Elon Musk to be a hardware designer for Tesla. Tesla asks you to improve the overall performance of their Tesla Model S with respect to a target benchmark suite. The Tesla team is considering an enhancement X that applies to 50% of the original dynamically executed instructions and speeds each of them up by a factor of 3. Your manager has some concerns about the complexity and the cost-effectiveness of X and suggest that you should consider an alternative enhancement Y. Enhancement Y, if applied only to some (yet unknown) fraction of the original dynamically executed instructions, would make them only 75% faster. Required:
Determine what percentage of all dynamically executed instructions should be optimized using enhancement Y to achieve the same overall speedup as obtained using enhancement X?