please solve these questions with all steps

Question 1 A manufacturing plant is planning to buy one of the following three dereces: A B C Initial cost 7.676 60,558 5177.000 Annual costs 2.473 4,266 $1,000 Annual benefits 8,546 21,435 $23.500 Salvage value after 10 years 1,467 5.004 565.000 if the useful life of each is 8 years and the plant's interest rate is 10%, the benefit-cost ratio of the incremental As closest to Write your answer to the nearest 3 decimal places, eg. 1.234 Questions The following two alternatives are being considered by a developer who bought some land to construct a residential building on Alternative 1 Alternative 2 Cost of building including cost of land 388,000 790,000 Resale value of land and building at end of 214,000 299,000 20-year analysis period, which neds to be deducted from the cost, rather than Jadded as a benefit Annual rental income after deducting all 71,000 104.000 operating expenses The interest rate for this investor is 8%. The analysis period is 20 years. The benefit-cost ratio of the incremental Alternative 2 - Alternative 1 is closest to: Write your answer to the nearest 3 decimal places (eg, 1.234) A business is considering the purchase of one of the following small devices A B C C D Initial Cost 90 74 15 50 Uniform Annual benefit 24 19 5 14 Each alternative has a 6-year useful life. The business uses an MARR OF N29. The Internal Rate of Return (IRR) of Incremental A-S is closest to Write your answer in percentage % form to the nearest one decimal point A company is considering the purchase of one of the following small devices A B 300 600 200 Initial Cost Uniform Annual benefit 45 96 33 Each alternative has a 10-year useful life. The business uses an MARR 94. The Internal Rate of Return (IRR) of incremental AC is closest to Write your answer in percentage % form to the nearest one decimal place le 123)