Engineering Economy 7th Edition by Leland Blank ,Anthony Tarquin

تمرين 48

Freeport McMoran purchased two model MTVS peristaltic pumps (to inject sulfuric acid and King Lee antiscalant) for use at its nanofiltration water conditioning plant. The cost of the pumps was $950 each. If the chemical cost is $11 per day, determine the equivalent cost per month at an interest rate of 12% per year, compounded monthly.Assume 30 days per month and a 3-year pump life.