I request to all the ppl who hv knwledge abt this topic.. atleast leave a hint please. The access time of a cache memory is 100 ns and that of main memory 1000 ns. It is estimated that 80% of the memory request are for read and 20% for write. The hit ratio for READ ACCESS only is 0.9 , A write through procedure is used. 1. What is the average access time of the system considering only memory read cycle? 2. What is the average access time of the system for both read and write requests? 3. What is the hit ratio taking into consideration the write cycle?