Engineering Economics; Could you please solve all 3 questions, I'll give you a thumbs up, I have 1 hour left, thank you in advance sir..

2.(20P) A company is planning to buy a minibus for 380 000 TL to use for personnel service. your van

It will save the company 95 000 TL per year from personnel travel fees, and in addition, the minibus will cover its own expenses. The scrap value of the minibus at the end of its 6-year economic life is estimated to be 90 000 TL. Since corporate tax is 42%, a) Pre-tax internal rate of return

b) Depreciation amount c) Find the after-tax internal rate of return.

4.(20P) Three independent projects are being considered.

When each project reaches the end of its useful life, it will be sold at scrap value and will not be renewed. desired yield

If the rate is 8%, which project should be selected?

5.(20P) The following information is known in a replacement analysis problem: Initial cost: 12 500 TL

Annual maintenance cost: None in the first three years, 2 000 TL at the end of the 4th year, 2 000 TL at the end of the 5th year, after the 5th year

will increase by 2 500 TL per year (4 500 TL at the end of the 6th Year, 7 000 TL at the end of the 7th year, etc.).

scrap value is zero. Take the interest rate of 10% and neglect income taxes. Calculate the economic life for this candidate equipment.

lk maliyet (X Bin TL) Yllk Dzgn Kazan (X Bin TL) Hurda deer (X Bin TL) Yaral mr (yl) A B 1000 2000 150 150 1000 2700 5 6 3000 0 5600 7