In January 2010, installation costs of $6,000 on new machinery were charged to Repair Expense. Other costs

Question:

In January 2010, installation costs of $6,000 on new machinery were charged to Repair Expense. Other costs of this machinery of $30,000 were correctly recorded and have been depreciated using the straight-line method with an estimated life of 10 years and no salvage value. At December 31, 2011, it is decided that the machinery has a remaining useful life of 20 years, starting with January 1, 2011. What entry(ies) should be made in 2011 to correctly record transactions related to machinery, assuming the machinery has no salvage value? The books have not been closed for 2011 and depreciation expense has not yet been recorded for 2011.

Depreciation
Depreciation is an important concept in accounting. By definition, depreciation is the wear and tear in the value of a noncurrent asset over its useful life. In simple words, depreciation is the cost of operating a noncurrent asset producing... Salvage Value
Salvage value is the estimated book value of an asset after depreciation is complete, based on what a company expects to receive in exchange for the asset at the end of its useful life. As such, an asset’s estimated salvage value is an important...