TUGAS 2 EKONOMI TEKNIK SEMESTER GENAP 2013/2014DIKUMPULKAN PALING LAMBAT SENIN 9 JUNI 2014

1. Compute the after tax return for the owners of an offshore diving company. They can purchase equipment to handle a special job for $2500. The equipment will have no salvage value and will last 5 years. They will receive revenue of $1500 each year. Use DDB depreciation and T = 45%

2. Make re-calculation for problem above if 30% of the capital provided by local bank as a loan.

3. Two pumps can be used for pumping corrosive liquid. A pump with a brass impeller costs $800 and is expected to last 3 years. A pump with a stainless steel impeller will cost $1900 and last 5 years. An overhaul costing $300 will be required after 2000 operating hours for the brass impeller while an overhaul costing $700 will be required for the stainless steel pump after 9000 hours. If the operating cost of each pump is $0.50 per hour, how many hours per years must the pump be required to justify the purchase of the more expensive pump? Use the interest rate of 10% per year.

4. New investment funds for the system company are restricted to $100.000 for next year. Select any or all of the following proposals using i = 15% for calculating the present worth values

proposals Initial investment Annual cash flow Life, years Salvage value1234

$25000$30000$45000$50000

$6000$9000

$12500$15000

4456

$4000$4500$7500

$10000

5. A replacement study is to be performed on pressing equipment in an industrial laundry. The challenging asset has a computed EUAWC = $42.000 for its anticipated 10 years life. Thorough data collection on the defender has resulted in the following projected annal operating costs (AOC) and trade in values for the next 5 years, after which the currently owned equipment would have to be repaired.

Additional years retained AOC Trade in Value12345

$34000$30000$30000$30000$30000

$28000$22000$15000$5000

0

If the current equipment is kept for another 5 years, it will cost a net estimated $2000 to remove it from the plant. Perform one additional year replacement analysis at a 16% per year return to determine how many years to keep this asset before replacing it with the challenger.

6. Management of the Above Board Company has a new piece of machinery with B = $110.000, n = 10 years and SV = $10.000. determine the depreciation schedule and present worth of depreciation at I = 12% per year using 175%DB method for the first 5 years and SL method for the next 5 years.