Machine A runs at $1\mathrm{.}5$ GHz and has a CPI of $1\mathrm{.}25$ for a particular program. Machine B runs at $3\mathrm{.}5$ GHz and has a CPI of $1\mathrm{.}85$ for that program, while executing $35\%$ more instructions. Which machine is faster for executing this program? What is the speedup over the slower machine?

Faster Machine $=$

Speedup $=$