Same ISAs on different architectures: Average CPIs and Performance

Consider two different implementations $($say P$1$ and P$2)$ of the same ISA. P$1$s clock rate is $3\mathrm{.}9$ GHz and

P$2$s clock rate is $3$ GHz$.$ Instructions are categorized into four groups A$,$ B$,$ C and D$.$ Under P$1,$ CPI of

group A instructions is $1,$ group B is $2,$ group C is $3,$ and group D is $3.$ Under P$2,$ CPIs of all groups are $2.$

An application has $1$ million instructions, and $10\%$ of those instructions belongs to group A$,20\%$ belongs

to group B$,50\%$ belongs to group C$,$ and $20\%$ belongs to group D$.$

$(1)$ What is total # of cycles for this application in each machine

$(2)$ What is the global CPI for each implementation?

$(3)$ What is MIPS for each implementation?

$(4)$ What is execution time for each implementation?