For a system with two levels of cache, define:$T_{c_1}$ is the first-level cache access time$T_{c_2}$  is the second-level cache access time$T_m$ is the memory access time$H_1$ is the first-level cache hit ratio$H_2$ is the combined first/second level cache hit ratio Provide an equation for the average access time $T_a$ of a read operation.
Numerical problem on Access time in Cache memory
cpu cache