CPUtime = IC x (CPIexecution + Mem accesses per instruction x Miss rate x Miss penalty) x Clock cycle time

Misses per instruction = Memory accesses per instruction x Miss rate

CPUtime = IC x (CPIexecution + Misses per instruction x Miss penalty) x Clock cycle time

Suppose a processor executes at ideal CPI = 1.1, 50% arith/logic, 30% ld/st, 20% control, and that 10% of data memory operations miss with a 50 cycle miss penalty, what is the average CPI with consideration of memory access? How much portion of time is the processor stalled waiting for memory?