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System a has two processors. program x takes 50 seconds to execute on one of the processors. program y takes 50 seconds to execute in parallel on the other processor. system b has a single processor that can execute only one program at a time. program x takes 35 seconds to execute on this processor. program y takes 35 seconds to execute on this processor. which system would you pick if you cared about overall system throughput for a workload that is a mix of programs x and y?

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