Input Cash Flows into BAll Plus from Table 1 In IRR menu of BAll Plus - IRRCPT=14.6% Based on the cash flow - Payback is calculated as years 6.2 years. Payback is therefore within our desired 8 years payback period - Net present value (NPV), assessed at a MARR of 13% is 1,650,147.119. This indicates the project exceeds our MARR of 13% - Internal Rate of Return for the project is 14.6%. This exceeds our MARR of 13% Sensitive Analysis Scenario 1: Changes in interest rate to 15% Figure 2: Cashflow Diagram (value in millions) Scenario 2: Change in Operating Cost Figure 3: Cashflow Diagram (value in millions)