A small high-speed commercial centrifuge has the following net cash following net cash flows and abandonment values over its useful life. The firm's MARR is 10% per year. Determine the optimal time for centrifuge to be abandoned if its current MV is $7,500 and it won't be used for more than five years. A small high-speed commercial centrifuge has the following net cash following net cash flows and abandonment values over its useful life. The firm's MARR is 10% per year. Determine the optimal time for centrifuge to be abandoned if its current MV is $7,500 and it won't be used for more than five years