(Solved): 5. (a)A program has \( 30 \% \) of its code enhanced ( \( \mathrm{Fe}=0.3 \) ), and the improved por ...

5. (a)A program has \( 30 \% \) of its code enhanced ( \( \mathrm{Fe}=0.3 \) ), and the improved portion runs 2.5 times faster. What is the factor of improvement Fi of the portion enhanced?? (b) If a portion of a program is enhanced to run 3 times faster \( (\mathrm{Fi}=3) \) and the overall speedup achieved is 2.5 , what fraction of the code was enhanced (Fe)?