with formulas please

Q.2. (10 points) A computer system has a cache (L.1). For a given progenam with I million instruetians, LI cache miss rafe is 20%. Average instruction exectuion time is 40 ns. Fer all misses, time to take a block from main memory into the L. I cache is 600ns. a. Calculate the time to execufe this program. Givo your result in milliseconds. b. You need to improve the performance of this system. You replace the cache by a new one that is 2 times facter than the existing onc, but the new cache has smaller capacity, 50 the miss rate is increased to 25%. Will the new design improve the performance? Calculate the execution time of the program and prove your