computer organization and architucture

Q4. ( 13 points) Consider a two-level memory system: Level 1 is the main memory with access time = 50 ns & hit ratio = 0.9999998. Level 2 is the hard disk with access time = 10 ms + the time needed to transfer a page from the disk to the main memory. Data transfer rate (from disk to main memory) = 100000 bytes/second. Average access time = 60 ns. Find the size of the page in bytes. 1