# $2-34$: A pump has failed in a facility that will be completely replaced in $3$ years. A brass pump costing $$6000$ installed will last $3$ years. However, a used stainless steel pump that should last $3$ more years has been sitting in the maintenance shop for a year. The pump cost $$13,000$ new. The accountants say the pump is worth $$7000$ now. The maintenance supervisor says that it will cost an extra $$500$ to reconfigure the pump for the new use and that he could sell the used pump $($as is$)$ now for $$4000.$