7 of 15 A high-pressure pump costs $40,000 for installation and has an estimated life of 12 years (Alternative 1) By the addition of a specialized piece of auciliary equipment, an annual savings of $500 in operating expense for the pump can be realized, and the estimated life of the pump can be doubled to 24 years (Alterative 2). The salvage (market value of either alternative is negligible at any time. Assume repeatability to cover a 24-year study period. The MARR IS 10% per year (Consider the auxiliary value X added to the value of the pump and find What present expenditure for the auxiliary equipment (in Alternative 2) can plant managers justify spending instead of repeating Alternative 1? O 21,149 23,437 17.238 13,619