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Table 1 below shows the impacts for electrical hand dryer and paper towels used in washrooms on an equivalent basis. Please rank the two options

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Table 1 below shows the impacts for electrical hand dryer and paper towels used in washrooms on an equivalent basis. Please rank the two options using the hierarchical ranking method based on (1) resource depletion, (2) energy consumption, (3) human and eco-toxicity, and (4) environmental impacts. Please show your hierarchical tree and justify your assignment of weighting factors for each category and subcategory. Table 1. Impacts of electrical dryer and paper towel on an equivalent basis Additional information which may be needed: FV = PV(1+i)^n PV =OC^*[(1+i)^n -1]/(i)(1+i)^n FV - future value; PV - present value; OC - operating cost; i - interest for each compounding period; n - number of compounded periods

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