Question 4 (20 points): Consider discount rate of 10% for the following cash flow: C= C100,00 C-150,00060 C: Cost, I: Income, L: Salvage Value Calculate the following parameters for this cash flow 60,000 11-60,000| 1-60,000 1 140,00 | 1-50 000-50,000-50,0001-50,000 L-$200,000 Year 10 a) NPV b) ROR c) Benefit Cost Ratio d) Present Value Ratio c) Based on above results, conclude if this investment is economically satisfactory Note: For calculating ROR you can use Excel IRR function but you need to include the ROR equation and required factors