What is the approximate internal rate of return of the equipment?
Extracted text: Manufacturing firm (In Php 000) 1 2 3 4 5 6 Net income 107 2,081 3,896 5,328 6,862 8,509 Depreciation and amortization 14,286 14,286 14,286 14,286 14,286 14,286 Change in NWC (326) (353) (285) (149) (153) (158) Сарех (100,000) Interest expense 6,650 5,550 4,345 3,026 1,582 Incremental cash flows (100,000) 20,717 21,564 22,242 22,491 22,576 22,636 Discount factor 0.9281 0.8613 0.7994 0.7419 0.6885 0.6390