computer architecture (please solve as soon as possible)

Question 1 (8 points) Course outcomes: (1, 2) Using a typical benchmark program, the following machine characteristics result: Processor Clock Frequency Performance CPU Time A 10 MHZ 4 MIPS 10x seconds B 20 8 MIPS 5x seconds 30 MHz 20 MIPS X seconds a. What is the relative (to C) size of the instruction count of machines A and B for the benchmark program running on the three machines? (5 points) b. What are the CPI values for the three machines? (3 points)