1a)NPV = Present value of cash inflows - Initial investment= $28,000 * Cumulative PV Factor at 14% for 10 years - $110,000= $28,000 * 5.216116 - $110,000 = $36,0511b)Payback period = Initial investment / Annual cash inflows = $110,000 / $28000 = 3.93years1c)At IRR Present value of cash inflows is equal to initial investment.$28,000 * Cumulative PV Factor at IRR for 10 years = $110,000Cumulative PV Factor at IRR for 10 years = $110,000 / $28,000 = 3.92857The PV factor falls between 21% to 22%, on intrapolation = 21.96%1d)Annual net income = Saving in cash operating cost - depreciation = $28,000 -($110,000/10)= $17,000Accounting rate of return = Average annual income / Initital investment = $17,000 /$110,000 = 15.45%1e)Accounting rate of return based on average investment = Average annual income /Average investmentAverage investment = (Initial investment + Salvage value) / 2 = $110,000/2 = $55,000Accounting rate of return = $17,000 / $55,000 = 30.91%