A CPU uses two levels of caches L1 and L2. It executes two types of
jobs J1 and J2. Their details are as follows:
(A) J1 comes with a probability of 0:3 and requires 2000 memory references,
all for reading. For J1, there are 100 misses in L1 and 60
misses in L2.
(B) J2 comes with a probability of 0:7 and requires 3000 memory references,
all for reading. For J2, there are 50 misses in L1 and 70
misses in L2
The L1 hit time is 2 cycles and the L2 hit time is 10 cycles. The L2 miss
penalty is 200 cycles. What is the average memory access time?
Please Sir help me with this .. I am really getting confused about how to approach for this question .