How did the expert get the 5.335 calculation?

Calculation of Net Present Value + Year Cash Flow PVF @ 10% Present Value 0 -2,40,000 1.000 -2,40,000.00 1 to 8 50,000 5.335 2,66,746.31 Net Present Value 26,746.31 Calculation of IRR Calculation of Net Present Value @ 15% Year Cash Flow PVF @ 15% Present Value 0 -2,40,000 1.000 -2,40,000.00 1 to 8 50,000 4.487 2,24,366.08 Net Present Value -15,633.92 IRR = Lower Rate + Lower Rate NPV / (Lower Rate NPV - Higher Rate NPV) * (Higher Rate - Lower Rate) = 10 + 26746.31 / (26746.31+15633.92) * (15 - 10) = 13.15% It is good to make Investment in the proposed project since it has positive NPV