Windsor, Inc. is considering purchasing equipment costing $66000 with a 6-year useful life. The equipment will provide annual cost savings of $16600 and will be depreciated straight-line over its useful life with no salvage value. Windsor requires a 10% rate of return. Present Value of an Annuity of 1 Period 8% 9% 10% 11% 12% 15% 4.623 4.486 4.231 4.111 3.784 4.355 What is the approximate net present value of this investment? $33600 $4234 $6293 $8468