Engineering Economy 7th Edition by Leland Blank ,Anthony Tarquin

تمرين 22

An investment of $75,000 in equipment that will reduce the time for machining self-locking fasteners will save $20,000 per year. At an interest rate of 10% per year, the number of years required to recover the initial investment is closest to:
a) 6 years
b) 5 years
c) 4 years
d) 3 years