Question

In January 2017, installation costs of $4,900 on new machinery were charged to Maintenance and Repairs Expense. Other costs of this machinery of $24,500 were correctly recorded and have been depreciated using the strsight-line method with an estimated life of 10 years and no salvage value. At December 31, 2018, it is decided that the machinery has a remaining useful life of 20 years, starting with January 1, 2018. What entries should be made in 2018 to correctly record transactions related to machinery, assuming the machinery has no salvage value? The books have not been closed for 2018 and depreciation expense has not yet been recorded for 2018. (Credit account titles are automatically indented when the amount is entered. Do not indent manually. If no entry is required, select "no entry" for the account titles and enter 0 for the amounts).

Date Account Titles and Explanation.                 Debit.       credit

December 31 1.
                       2
                       3

                      (To correct for the error of expensing installation cost on.    
                           machinery acquired in January, 2017)

                      1
                      2

                      (To record depreciation on machinery for 2018 based on a
                        20-year useful life)            

Answer 1

Date	Particulars	Debit	Credit
31 Dec	Machinery Account	4900
	To Accumulated Deprecition Machinery		490
	To Retained Earnings		4410
31 Dec	Depreciation Expense Machinery	1323
	To Accumulated Depreciation Machinery		1323

Calculation of Depreciation:
Depreciation on Amount wrongly transferred to Maintenance Account for 2017 = $4900/10 years = $490
Depreciation on Dec 31 2018 to be charged :
Depreciation already charged = 24500+4900 = 29400/10 years = 2940
Depreciation for 2018 = (29400-2940)/20 = 1323