You are considering adding an encryption accelerator to a quad-core machine. When computing encryption operations the accelerator core is 20 times faster than without. The percentage of encryption is the percentage of time in the original execution that is spent performing encryption operations. a. With what percentage of encryption will adding the accelerator result in a speedup of 2? b. What percentage of time in the new execution will be spent on encryption operations if a speedup of 2 is achieved