Q$\mathrm{.}5)$

Consider a computer system with the following memory access time specifications:

$Tc=100ns$

$Tm=1200ns$

where $Tc$ and $Tm$ are the cache memory and main memory access times respectively.

If the effective access time is $10\%$ greater than the cache access time, what is the hit ratio $\text{'}H\text{'}?$