You are trying to pick the least-expensive machine for your company. You have two
choices: machine A, which will cost $100,000 to purchase and which will have OCF of –
$7,000 annually throughout the machine’s expected life of three years; and machine B,
which will cost $125,000 to purchase and which will have OCF of -$2,600 annually
throughout that machine’s four-year life. Both machines will be worthless at the end of
their life. If you intend to replace whichever type of machine you choose with the same
thing when its life runs out, again and again out into the foreseeable future, and if your
business has a cost of capital of 15 percent, which one should you choose?