Bramble, Inc. is considering purchasing equipment costing $54000 with a 6-year useful life. The equipment will provide annual cost savings of $13135 and will be depreciated straight-line over its useful life with no salvage value. Bramble requires a 10% rate of return Period 6 8% .623 Present Value of an Annuity of 9% 10% 11% 12% 4.486 4.355 4.231 4.111 4 15% 3.784 What is the approximate internal rate of return for this investment? 10% O 12% O9%