Machinery purchased for $63,440 by Carver Co. in 2008 was originally evaluated to have a life of 8 years with a salvage value of $4,880 at end of that time. Depreciation has been entered for 5 years on this basis. In 2013, it is evaluated that the total estimated life should be 10 years with a salvage value of $5,490 at end of that time. Consider straight-line depreciation.