Redo Problem 14.14 with the following additional information.
• The old machine has been fully depreciated.
• The new machine will be depreciated under a seven-year MACRS class.
• The marginal tax rate is 40%, and the firm's after-tax MARR is 12%.
In Problem 14.14
The Wu Lighting Company is considering replacing an old, relatively inefficient vertical drill machine that was purchased seven years ago at a cost of $10,000. The machine had an original expected life of 12 years and a zero estimated salvage value at the end of that period. The divisional manager reports that a new machine can be bought and installed for $12,000. Furthermore, over its five-year life, the machine will expand sales from $10,000 to $ 11,500 a year and will reduce the usage of labor and raw materials sufficiently to cut annual operating costs from $7,000 to $5,000. The new machine has an estimated salvage value of $2,000 at the end of its five-year life. The old machine's current mar-ket value is $1,000; the firm's MARR is 15%.
(a) Should the new machine be purchased now?
(b) What price of the new machine would make the two options equal?