Processor has access to four level of memory. Level 1 has an access time of 0.005s; Level 2 has an access time of 0.03s; Level 3 has an access time of 0.09s; Level 4 has an access time of 0.2s;

Calculate the average access time, If 62% of the memory accesses are found in the level 1, 19% by the Level 2, 12% by the Level 3.