Suppose you buy a machine and you have the option of paying the full price, $40,000, now; or $10,000 at the end of each of the next five years. What is the cost of capital, or the implied interest rate, for the two methods to be equivalent?

Trestle Corporation wants to purchase a new finishing machine. They currently have an old machine, which is operable for five more years and is expected to have a zero-disposal value at the end of five years. If the company buys the new machine, the old machine will be sold now for $95,000 (book value is $75,000). The new machine will cost $635,000 and will be depreciated for tax purposes on a straight-line basis over its useful life of 5 years. The new machine will not have a salvage value and will not be sold after its useful life. An additional cash investment in working capital of $25,000 will be required if the new machine is purchased. The investment is expected to net $80,000 in before tax cash inflows during the first year of operation and $235,000 each additional year of use. These cash flows do not include depreciation and are recognized at the end of each year. The working capital investment will not be recovered at the end of the asset's life. The company's tax rate is 32%.

7A) You are in the pizza business and want to buy a new pizza making machine. The machine costs $15051 today. At the end of each year you own the machine it will give you returns of $3420 after paying for maintenance and repairs. [Go on to 7B.]

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