Suppose a computer is running a program that takes 500 seconds total to execute. The breakdown of execution time is as follows: 80 seconds on floating-point (FP) instructions 120 seconds on integer (INT) Instructions 125 seconds on branch (B) instructions 175 seconds on load/store (LS) instructions By how much is the total time reduced if an improvement to the computer reduces the time for INT instructions by 40% but increases the time for US instructions by 20%? New INT time 2 seconds New L/S time seconds New total execution time Percent reduction between old and new time seconds Suppose a program runs on a computer in 150 seconds, and we want to make all floating point instructions run 3 times faster. What is the improved total execution time if only 25% of the original execution time was spent on floating point instructions in the original scenario? Answer: seconds