Answer and Explanation:
The Journal entry is shown below:-
1. Retained Earnings Dr. $90,000
To Accumulated Depreciation - Machinery $90,000
(Being To correct for the omission of depreciation expense in 2019 is recorded)
2. Depreciation Dr, $40,000
To Accumulated Depreciation - Machinery $40,000
(Being depreciation expense for 2021)
Working Note:-
Amount of Depreciation In 2019 = $550000 × 9 ÷ 55
= $90000
Cost Of machine $550,000
Less: Depreciation Prior to 2021
2012 - $55000 × 10 ÷ 55 $100,000
2013 - $55000 × 9 ÷ 55 $90,000
2014 - $55000 × 8 ÷ 55 $80,000 $270,000
Book Value as on 01.01.2021 $280,000
Depreciation For the 2021 = $280,000 ÷ 7
= $40,000