On January 1, 2014, Ballard Company spent $21,000 on an asset to improve its quality. The asset had been purchased on January 1, 2009 for $56,000. The asset had a $14,000 salvage value and a 6-year life. Ballard uses straight-line depreciation. What would be the book value of the asset on January 1, 2015? How to I figure this out?