Suppose you have a non-pipelined CPU that takes 5 steps to execute an instruction: Fetch, Decode, Operand-Fetch, Execute, and Store. Each step takes 1 nanosecond. How many 5-step instructions can be executed on this non-pipelined CPU in one second?

Train A leaves the station at 4 p.m. 300 miles away, Train B leaves leaves at 6 p.m. If Train A travels 45 mph and Train B travels 60 mph, when will they meet?

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