b) Mark Medical, Inc., is considering replacing its existing computer system, which 07 was purchased 2 years ago at a cost of $325,000. The system can be sold today for $250,000. It is being depreciated using single line method for 5 years. A new computer system will cost $500,000 to purchase and install. Replacement of the computer system would not involve any change in net working capital. Assumea 40% tax rate on ordinary income and capital gains. i Calculate the book value of the existing computer system ii. Calculate the after-tax procettis of its sale for $250,000. iii. Calculate the initial investment associated with the replacement project