Polypropylene wall caps, used for covering exterior vents for kitchen cooktops, can be made by two different methods X and Y. The estimated cash flows are shown in Table below. Which one should be...

Extracted text: Polypropylene wall caps, used for covering exterior vents for kitchen cooktops, can be made by two different methods X and Y. The estimated cash flows are shown in Table below. Which one should be selected on the basis of Annual Worth (AW) analysis at 10% per year? Method X Method Y First cost, $ - 75,000 - 140,000 Annual operating - 32,000 - 24,000 cost, $ Salvage value, $ 9,000 9,000 Life, years 4 10% TABLE 15 Discrete Cash Flow: Compound Interest Factors 10% Single Payments Uniform Series Payments Arithmetic Gradients Compound Sinking Compound Capital Recovery A/P Present Gradient Gradient Present Worth Amount Worth Fund Amount Present Worth Uniform Series F/P P/F A/F F/A P/A P/G A/G n 1 1.1000 0.9091 1.00000 1.0000 1.10000 0.9091 2 1.2100 0.8264 0.47619 2.1000 0.57619 1.7355 0.8264 0.4762 3 1.3310 0.7513 0.30211 3.3100 0.40211 2.4869 2.3291 0.9366 4 1.4641 0.6830 0.21547 4.6410 0.31547 3.1699 4.3781 1.3812 1.6105 0.6209 0.16380 6.1051 0.26380 3.7908 6.8618 1.8101 1.7716 0.5645 0.12961 7.7156 0.22961 4.3553 9.6842 2.2236 7 1.9487 0.5132 0.10541 9.4872 0.20541 4.8684 12.7631 2.6216 8 2.1436 0.4665 0.08744 11.4359 0.18744 5.3349 16.0287 3.0045 5.7590 6.1446 9 2.3579 0.4241 0.07364 13.5795 0.17364 19.4215 3.3724 10 2.5937 0.3855 0.06275 15.9374 0.16275 22.8913 3.7255