before we begin the steps of the net-present-value method, let's examine the cash-flow data in Exhibit 16-3 to determine if any of the data can be ignored as irrelevant. Notice that 1 and 9 do not differ between the two alternatives. regardless of which new computing system is purchased, certain components of the old system can be sold new for 25000. Moreover, the data-link service will cost 2000 annually, regard- less of which system is acquired. If the only purpose of the NPV analysis is to determine