I'm very confused about how to calculate. I've placed question marks in the fields I need help with.

APPLY THE CONCEPTS: Internal rate of return

The Darling purchasing department has made revisions to their costs and annual cash flows for Project A and Project B, as outlined below.
Project A	Project B
Project A's revised investment is $255,600. The project's life and cash flow have changed to 7 years and $52,500, respectively, while expenses have been eliminated.	Project B's revised investment is $141,500. The project's life and cash flow have changed to 6 years and $87,500 while expenses reduced slightly to $55,000.

Compute the internal rate of return factor for Project A and Project B and then identify each project's corresponding percentage from the PV ordinary annuity table.

Note: Enter the IRR factor, to 5 decimal places.

Project A: The calculated IRR factor is ??? and this value corresponds to which percentage in the present value of ordinary annuity table? ???%

Project B: The calculated IRR factor is ??? and this value corresponds to which percentage in the present value of ordinary annuity table? ???%

APPLY THE CONCEPTS: Internal rate of return The Darling purchasing department has made revisions to their costs and annual cash ows for Project A and Project B, as outlined below. P_rojectA P je B Project A's revised investment is $255,600. The Project B's revised investment is $141,500. project's life and cash ow have changed to 7 The project's life and cash flow have changed years and $52,500, respectively, while expenses to 6 years and $87,500 while expenses have been eliminated. reduced slightly to $55,000. Compute the internal rate of return factor for Project A and Project B and then identify each project's corresponding percentage from the PV ordinary annuity table. Note: Enter the IRR factor, to 5 decimal places. Project A: The calculated IRR factor is [:] and this value corresponds to which percentage in the present value of ordinary annuity table? :] % Project B: The calculated IRR factor is [:J and this value corresponds to which percentage in the present value of ordinary annuity table? I:] %