On January 1, 2018, Betty DeRose, Inc. purchased equipment for $95,000. The equipment was assigned an estimated life of 15 years and a salvage value of $12,5 00. On January 1, 2021, Betty DeRose decided the life of the equipment should be changed from 15 to 25 years with a salvage value of $5,900 at the end of the 25 year s. Betty DeRose uses the straight-line method to depreciate its assets. Calculate the book value of the equipment at December 31, 2023